🎮 game of the day

Every hobby gets a game. Some are puzzles, some are quizzes, some are just strange little things I made at 2am.

★ slepp's favourites

Out of 178, these are the ones I'd actually hand you — the goal is obvious in a few seconds and the feel holds up. Re-picked from time to time as the pile grows.

Radon Triangulation

Atmospheric Radon Mapping

Hex-grid Minesweeper with radon detectors—the logic clicks immediately and you're chasing the deduction high within seconds.

Hold Pattern Groove

Holding-Pattern Polyrhythm Loops

Two orbiting airplanes, tap every beat from both rhythms, not just the alignments—it sounds simple until the 5:3 polyrhythm arrives and your brain splits in half.

Stone & Steel

Knife Sharpening

Sharpening a blade through four grits by swiping at the right angle feels exactly like the real thing, right down to the anxiety before the paper test.

Feel the Pins

Lockpicking simulation where you drag to probe pins and feel for the binding order—it nails the tactile ambiguity of 'is that it or am I imagining it?'

Trace & Pour

Cold Process Soap Making

Tilt to pour viscous soap into molds without overflowing as it thickens each round—satisfying physics and just enough panic.

Golden Seams

Kintsugi

Trace gold lacquer along cracks in broken pottery with no timer, no score—just the meditative act of mending something beautiful.

Crossdate

Dendrochronology Core Sampling

Drag tree-ring core samples to align growth patterns and date them—pattern-matching that rewards your eye more than the instructions ever could.

Gentle Current

Marimo Moss Ball Cultivation

Guide a moss ball through water currents to collect sunlight and float free—it's Flappy Bird but slower, kinder, and somehow sadder.

Crease Logic

Origami Engineering

Toggle origami folds until Maekawa's theorem is satisfied at every vertex—a pure constraint-satisfaction puzzle that teaches you the math by making you feel it.

Etch Pulse

Verdigris Electroetched PCB Art

Tap to send electroetch current pulses at the right moments to reveal PCB traces without overdoing it—timing game with actual chemistry stakes.

the whole pile

Arc Second

Precision Surveying Theodolite Operation May 23

Align a theodolite crosshair with targets under time pressure. Precision escalates from ±30" to ±5" arc-seconds.

Aurora APRS Mapper

Classify incoming APRS packets on a dark aurora map — identify balloons, ground stations, aircraft, and interference to track a stratospheric balloon.

Block Print Pattern Match

Natural Dye Textile Printing May 30

Drag and position carved wooden printing blocks to recreate traditional textile patterns with natural plant dyes.

Dawn Chorus

Birdwatching May 25

Identify birds by their calls

Binocular Sweep

Birdwatching May 24

Birdwatching field identification

Cache Finder

Geocaching May 21

GPS triangulation puzzle for geocachers

Center & Pull

Pottery Wheel Throwing May 18

Master the pottery wheel - center and shape clay to match target forms

Center the Clay

Pottery Wheel Throwing May 17

Master the pottery wheel by centering wobbling clay with sustained, gentle pressure before time runs out.

Breath and Turn

Glass Blowing May 16

Glass Blowing - Shape molten glass by blowing and rotating before it cools

Curd Cut Challenge

Cheese Making May 14

Master the art of cheese making by cutting curds into uniform pieces

Crystal Cracker

Mineral Specimen Collecting May 12

Tap glowing markers as they rotate to crack open geodes and reveal rare crystals.

Bloom Path

Phototropic Sculpture Gardens May 6

Guide phototropic flower-sculptures into a connected bridge by positioning the sun. Avoid shadows from stone pillars.

Darkroom Sequence

Spore Print Cyanotype Darkroom May 5

Spore Print Cyanotype Darkroom

Etch Pulse★

Verdigris Electroetched PCB Art Apr 12

Control electroetching current to reveal PCB art - time your pulses perfectly to etch traces without over-etching.

Cathode Cycle

Nixie Tube Clock Building Apr 1

Tap nixie tubes to cycle their digits and prevent cathode poisoning. Keep all tubes healthy for 2 minutes!

Bias Drift

Vacuum Tube Audio Amplifier Building Mar 31

Keep four vacuum tubes biased in the sweet spot as they heat up and drift. Drag to adjust each tube's bias voltage.

Edge Highlight

Miniature Painting Mar 27

Trace highlight edges on miniature silhouettes with steady brush control. Slow and steady wins!

Cat's Whisker Calibration

Crystal Radio Restoration Mar 19

Find hot spots on a galena crystal by dragging the whisker and locking clear signals.

Chain Stitch

Coptic Stitch Flight Logbook Binding Mar 15

Path-drawing puzzle where you trace Coptic bookbinding stitches to bind a flight logbook.

Shape the Silence

Bonsai Mar 13

Prune branches to match the target silhouette. Every cut is permanent — contemplate before you snip.

Crease Logic★

Origami Engineering Mar 8

Solve origami crease patterns by toggling folds to satisfy Maekawa's Theorem.

Carve & Press

Linocut Printmaking Mar 6

Carve linoleum blocks and pull prints — but remember, the image comes out mirrored!

Burn Control

Pyrography Mar 5

Press and hold to burn wood to the perfect shade. Master the art of pyrography timing.

Crossdate★

Dendrochronology Core Sampling Mar 5

Match tree ring patterns by dragging core samples to align them. Date 5 samples using real dendrochronology crossdating technique.

Ebru Flow

Paper Marbling (Ebru) Mar 3

Create beautiful marbled patterns by dropping ink and swirling it through water. Use stylus or comb tools to craft flowing designs.

Escapement Rhythm

Mechanical Watch Disassembly Feb 27

Tap in time with an oscillating balance wheel as it reaches the release point. Land 36 perfect ticks to wind one hour before the mechanism jams or time runs out.

Coil Tender

Guitar Pickup Winding Feb 24

Wind copper wire onto a guitar pickup bobbin while maintaining perfect tension. Too fast and the wire snaps, too slow and the coil goes microphonic!

Curve Engraver

Roasting Profile Curve Engraving Feb 22

Engrave roasting profile curves onto metal plates by tracing temperature over time.

Cathode Preflight

Nixie Tube Flight Instrument Clocks Feb 20

Calibrate vintage nixie tube flight instruments by dragging to match target readings before takeoff.

Escapement Calibrator

Orrery Clockwork Escapement Printing Feb 17

Calibrate the orrery escapement, align planets, and print for points.

Colour Cadence Trails

Choir Pitch Lightpainting Feb 3

Coloured orbs drift down, each mapped to a musical chord degree. Tap them in the correct cadence order to build glowing light trails across 8 rounds of increasing difficulty.

Lobe Matchdown

Antenna Pattern Chess Set Jan 27

Two radiation patterns appear side by side. Identify which chess piece has the matching antenna lobe shape from a palette of six. Quick answers earn bonus points across 10 timed rounds.

Baton Blend Rush

Pitch-Tracking Conductor Baton Jan 23

Drag a conductor's baton to match tempo and volume target zones across 8 musical phrases. Stay in the zone to score points.

Doppler Drift Arp

Propeller Doppler Arpeggiator Jan 22

An airplane flies past with Doppler-shifted pitch. Drag a slider to match the frequency you hear, then tap LOCK to capture the note. Six rounds build a custom arpeggio.

Spike Shift

Knight Aperture Star Spikes Jan 20

Optical alignment puzzle — drag and rotate aperture mask bars to align diffraction spikes with the target star pattern. Score on angle accuracy across 8 rounds.

Beacon Forker

Morse Chess Tactics Beacon Jan 12

Chess fork puzzle — find where the knight forks two pieces. Morse code beeps hint at the answer square.

Aurora Chorus Sync

Aurora Chorus Sonified Timelapse Jan 2

Rhythm game — tap falling aurora pulses in sync with VLF chorus chirps across three frequency lanes. Chain combos for bonus points under the northern lights.

Beat Error

Calibrate mechanical watch movements by adjusting the regulator to match the target beat rate.

Charting the Invisible

Airborne RF Shadow Cartography Jan 7

Fly a foam wing over terrain to triangulate hidden RF sources. The signal meter reacts as you get closer — drag to fly, tap to drop markers. Minesweeper meets radio direction-finding across 5 rounds of increasing difficulty.

Carving the Airwaves into Light

RF Waterfall Lithophanes Jan 5

A sculpting puzzle — draw on a pixel grid to match RF waterfall signal patterns and carve lithophanes from radio waves. Score based on pattern accuracy across 5 rounds.

Burst Calculator Challenge

Stratospheric Balloon Telemetry Dec 31

Multi-round science puzzle — dial in the perfect helium fill volume for each balloon launch scenario. Score based on how close your burst altitude is to the target. 8 rounds with increasing difficulty: wind, heavy payloads, and nighttime cooling.

Constellation Connect

A 3D star field where players click on stars to form constellations. Connect stars in the right order to match patterns across 5 rounds with increasing difficulty.

Constellation Hunter

Navigate a 3D star field and trace constellation patterns by clicking stars in sequence. Find 5 constellations before time runs out!

Drum Solo

A 4-lane drum rhythm game with falling beats. Hit D/F/J/K or tap lanes in time with the music. Crown beats double your points!

Feel the Pins★

A lockpicking simulation where you apply tension and feel for the binding pin to pick a lock.

Fold & Dye: Shibori Studio

Shibori Resist Dyeing Jun 1

Fold a 3D fabric square and apply indigo dye to recreate traditional Shibori resist patterns through geometric symmetry.

Heddle Beat

Loom Weaving May 29

Loom Weaving

Knotwork Balance

Macramé Plant Hangers May 27

Macramé Plant Hangers - Drag cords to balance the hanger and place plants

Frame Perfect

Benchmark Hunting May 22

Hit timing markers in four benchmark lanes to maintain stable FPS under thermal stress.

Mantis Vision

Praying Mantis Rearing May 10

Hunt prey through the compound eyes of a praying mantis. Track moving insects and strike at the right moment!

Mycelial Tuner

Fungal Resonance Mapping May 9

Click to emit resonance waves that guide glowing spores through a fungal network into collection nodes. Chain reactions earn bonus points!

Lichen Caliper Challenge

Lichen Growth Rate Calibration May 7

Measure lichen specimens with precision calipers. Race against time to calibrate your eye for growth rate studies.

Hyphal Match

Mushroom Spawn Grafting May 3

Drag to connect pulsing mycelium nodes at peak brightness — master timing across three substrate types before the clock runs out.

Iridescent Moment

Soap Bubble Photography Apr 30

Photograph floating soap bubbles by adjusting focus depth and timing your shots when the iridescent swirl pattern aligns perfectly.

Harmonic Light Tiles

Fipple Harmonic Lithophane Tiles Apr 29

Tap translucent tiles in rhythm with the melody to breathe light through them and reveal a hidden lithophane image.

Glissando Tracker

Slide Whistle Tuning Apr 28

Match the scrolling pitch line by dragging your slide whistle plunger up and down. Stay on-pitch to build combos!

Harmonic Forge

Tuning Fork Metallurgy Apr 26

Forge tuning forks by striking hot metal in rhythm. Your tempo determines the pitch!

Ghost Pull

Gel Plate Monoprinting Apr 23

Drag stencils onto a gel plate to mask paint, then pull prints. Plan across two pulls - the vibrant first and faint ghost second - to match target compositions.

Lathe Line

Wooden Headphone Enclosure Turning Apr 21

Turn wooden headphone cup enclosures on a lathe by dragging a chisel to match target profiles.

Kumiko Pattern Puzzle

Kumiko Woodworking Apr 15

Assemble traditional Japanese geometric wood patterns by placing strips in the correct order

Field Sculptor

Theremin Antenna Pattern Tuning Apr 13

Shape electromagnetic field patterns by positioning your hands near theremin antennas. Match target patterns to unlock musical phrases.

Loop the Loop

Nalbinding Apr 10

Guide your needle through ancient nalbinding stitch patterns—thread loops in the right sequence before your yarn runs out!

Living Sculpture

Bonsai Apr 6

Shape a growing bonsai tree to match the master's vision using physics-based bending, pruning, and wiring.

Tension & Dropouts

Reel-to-Reel Tape Restoration Apr 5

Balance tape tension while marking dropouts for splice repair. Watch for sticky-shed syndrome!

Mist Master

Oyster Mushroom Cultivation Apr 3

Keep oyster mushroom clusters in the humidity sweet spot by spraying water — but don't overwater or mold will spread!

Molten Pour

Pewter Casting Apr 2

Tilt molten pewter into intricate mold cavities. Control temperature and flow to achieve perfect fills without overflow.

Gentle Current★

Marimo Moss Ball Cultivation Mar 30

Guide a marimo moss ball through water currents, collecting sunlight to photosynthesize and float to freedom.

Focal Point

Microscopy Mar 25

Adjust the focus dial to bring specimens into clarity, then identify what you see under the microscope.

Iwagumi Balance

Aquascaping Mar 24

Arrange stones in a balanced Iwagumi composition with golden ratio harmony.

Ground Truth

Metal Detecting Mar 20

Deploy geophones, analyze seismic waveforms, and triangulate the epicenter of hidden underground events.

Grit & Spin

Rock Tumbling Mar 7

Control tumbler speed to polish rocks through grit stages while avoiding cracks.

Movement Breakdown

Mechanical Watch Disassembly Mar 2

Carefully disassemble a mechanical watch movement by removing parts in the correct order. Delicate parts require slow, steady hands.

Kettle Stitch

Bookbinding Mar 1

Thread your way through traditional bookbinding stitch patterns. Drag the golden thread through holes in the correct sequence to bind signatures together.

Golden Seams★

Kintsugi Feb 28

Trace gold lacquer along cracks in broken pottery. Embrace imperfection in this meditative kintsugi experience.

Harmonic Resonance Tuner

Harmonic Telegraph Key Restoration Feb 26

Restore vintage telegraph keys by tuning them to precise harmonic frequencies using ear and oscilloscope.

Brass Ear

Cylinder Music Box Transcription Punching Feb 19

Listen to a music box melody and punch pins onto a cylinder to recreate it.

Hidden Linkage

Puzzle Box Mechanism Design Feb 16

Drag sliding panels in the correct sequence to unlock a puzzle box and uncover hidden dependencies.

Harmonic Ecology

Generative Soundscape Composition Feb 11

Drag and mute frequency orbs across low, mid, and high bands to keep a harmony meter balanced. Stay above 25% harmony for 90 seconds to win; drop below and the soundscape collapses.

Flow State

Fountain Pen Restoration Feb 10

Calibrate vintage fountain pen nibs by adjusting tine gap, feed depth, and ink saturation to achieve perfect ink flow.

Flightpath Loop Drums

Flightpath Zoetrope Drums Feb 9

Match aviation waypoint patterns on a spinning zoetrope drum machine

Orbital Alert

Orbital Decay Audio Notifications Feb 8

Listen to satellite decay tones and drag them to the correct priority zone before they burn up.

Knight's Tour VFR Planner

VFR Knight's Tour Grid Flights Feb 2

Plan a knight's tour across a VFR chart grid while weather and fuel constraints tighten the puzzle.

Gust and Chord

METAR Chord Briefings Feb 1

Weather music quiz — decode wind speed, gust factor, and cloud ceiling from musical chords across 10 METAR briefing rounds.

Hold Pattern Groove★

Holding-Pattern Polyrhythm Loops Jan 21

Two airplane beats orbit at different rhythms. Tap whenever either one passes through the bottom marker — hit every beat, not just the alignments. 8 rounds of increasingly complex polyrhythm ratios.

Lobe Lantern Lab

Antenna Lobe Lanterns Jan 13

Drag sliders to adjust element count, spacing, and phase shift of a virtual antenna array. Match the target radiation pattern, then tap Submit to lock in your answer across 8 rounds.

METAR Chord Decoder

METAR Chord Briefings Jan 9

Decode real-format METAR weather reports segment by segment — wind, visibility, clouds, temperature, altimeter. Correct answers build a musical chord; wrong answers play dissonance. 5 METARs per game, scored by accuracy and speed.

Morse Trail Stacker

Morse Beacon Star-Trail Lightpainting Jan 8

Watch and listen to a morse pattern for a single letter, then replicate it by tapping (dit) and holding (dah). Correct sequences grow a star trail. Progressive difficulty unlocks harder letters across five levels.

Mapping the Park

Foam-Wing Orthomosaic Mapping Jan 6

Plan a foam-wing drone's flight path over a park, placing waypoints for overlapping photo coverage. Manage limited battery, fight wind drift, and map as much terrain as possible.

Grain Cloud Composer

Generative Soundscape Composition Jan 1

Draw on the canvas to spray sound grains and long-press to place emitters. Fill shifting target zones with enough grains before time runs out across 6 scored rounds of increasing difficulty.

Origami Fold Slider

Slide origami paper tiles with mountain and valley fold creases to match target patterns. 5 levels from Crane to Dragon with star ratings.

Overtone Matcher

Tongue Drum Tuning Apr 22

Tune a tongue drum by ear — drag magnets to adjust pitch, tap to test, and lock all 8 tongues to complete the pentatonic scale.

Paper Plane Hangar

Launch paper planes through glowing hoops. Ride thermals to reach high-value targets!

Paper Plane Pilot

Drag to aim and launch paper planes at floating targets. 5 rounds of increasing difficulty with physics-based flight, wall bounces, and near-miss scoring.

Paper Squadron

Launch paper planes through glowing rings in the night sky. Drag to aim, release to fly!

Radon Triangulation★

Atmospheric Radon Mapping May 28

Place detectors on a hex grid to triangulate atmospheric radon sources using adjacent counts and logic deduction.

Signal Sweep

Radio Telemetry Wildlife Tracking May 26

Track wildlife via radio telemetry by rotating a directional antenna and switching frequencies to locate all tagged animals before your battery dies.

Saddle Stitch Symphony

Leatherworking May 19

Master the saddle stitch rhythm — alternate left and right needles through glowing holes to create the strongest leather seam.

Red-Hot Raku

Raku Pottery Firing May 18

Drag glowing pottery from the kiln at the perfect moment and plunge into reduction bins before it cools!

Perfect Loop

Fly Fishing May 15

Master the rhythm of fly casting to reach your target distance. Adjust to changing wind conditions.

Signal Triangulation

Meteorite Recovery by Radio Direction Finding May 13

Meteorite Recovery by Radio Direction Finding

Spore Discharge Recorder

Bioacoustic Spore Discharge Recording May 8

Record fungal spore discharge events with precise timing

Resonant Strike

Singing Bowl Hammering Apr 25

Hammer a singing bowl to tune it to the target frequency. Rim raises pitch, center lowers it.

Ring Strike

Coin Ring Forging Apr 25

Forge a coin into a ring with rhythmic hammer strikes. Keep the metal hot, avoid cracks, and preserve the coin's design.

Surface Resonance

Piezoelectric Contact Mic Building Apr 24

Match vibration patterns by tapping surfaces with the right pressure to calibrate your piezo contact mic.

Pour Heart

Latte Art Apr 17

Control the pour to create latte art patterns - hearts, tulips, and rosettas

Slit & Sync

Pinhole Streak Camera Building Apr 17

Control film transport speed to capture streak photographs matching target patterns

Storm Scribe

Barograph Chart Art Apr 16

Draw pressure curves on a scrolling barograph drum to predict incoming weather events. Match your ink trace to storm dips and fair-weather peaks.

Shadow Scribe

Sundial Making Apr 14

Draw hour lines on a sundial by observing where the gnomon's shadow falls as the sun arcs across the sky.

Running Stitch

Sashiko Stitching Apr 9

Trace traditional Sashiko patterns with rhythmic running stitches. Hold to stitch, release for gaps - maintain the beat!

The Perfect Impression

Wax Seal Making Apr 8

Pour molten wax, wait for the perfect temperature, and stamp your seal with precision. Different recipients demand different styles!

Sounder Check

Telegraph Sounder Restoration Apr 7

Listen to Morse code patterns on a telegraph sounder and tap them back with correct timing. Calibrate the restored sounder through 10 rounds of increasing difficulty.

Pressure Purge

Espresso Machine Restoration Mar 29

Manage boiler pressure and flush scale deposits before the gauges blow!

Pheromone Trails

Ant Keeping Mar 26

Draw pheromone paths to guide foraging ants from nest to food sources before time runs out.

Steady Wraps

Fly Tying Mar 23

Control thread tension while wrapping a fly fishing lure.

Sensor Calibration

Weather Station Building Mar 18

Calibrate weather station instruments by adjusting dials to match reference values before they drift out of tolerance.

Signal Hunter

Shortwave Listening Mar 16

Tune shortwave bands to lock distant stations before propagation shifts.

Slide Calibrator

Slide Rule Collecting Mar 10

Drag the sliding C-scale of a vintage slide rule to position the answer under the hairline cursor, then tap Submit. Solve multiplication problems against a 90-second clock with tightening precision requirements.

Stone & Steel★

Knife Sharpening Mar 4

Sharpen your blade by swiping at the perfect angle through 4 grit stages, then prove your edge with the paper test.

Spore Match

Mushroom Foraging & Spore Printing Feb 27

Mushroom Foraging & Spore Printing

Score & Bake

Sourdough Bread Baking Feb 21

Trace slash patterns on sourdough loaves with confident strokes. Accuracy, smoothness, and speed determine your score!

Signal Lock: Balloon Telemetry

Stratospheric Balloon Telemetry Feb 15

Track a high-altitude balloon's drifting radio frequency through Doppler shifts caused by wind and ascent.

Stellar Groove Matcher

Stellar Spectrum Music Box Discs Jan 29

A rotating music box disc plays notes when pegs cross the playhead. Listen to the target melody, then tap to place pegs and recreate it. 8 rounds of increasing difficulty — match the groove!

Drift-Align

Star-Drift Compass Calibration Cards Jan 28

Drag a crosshair to track a drifting Polaris star and tap to lock your aim. The star moves faster and the timer shrinks each round across 8 rounds of precision alignment.

Horizon Stitcher

Stratospheric Telemetry Panorama Stitching Jan 26

Drag balloon-camera photo tiles to align their horizon lines and rebuild a stratospheric panorama. Telemetry timestamps hint at ordering across 6 rounds with increasing tile counts.

ATIS Choir Cadence

ATIS Choir Harmonization Jan 20

Four ATIS data cards are shuffled on screen. Tap them in the correct broadcast order — Wind, Visibility, Ceiling, Runway — to make the choir sing in harmony across 8 rounds.

Touch the Chord

Chord Spectrogram Relief Tiles Jan 18

Music identification quiz — hear a chord, read its spectrogram relief tile, and tap the correct name. 12 rounds of major, minor, diminished & augmented chords.

Skytrace Pathwright

APRS Skytrace Sculptures Jan 14

APRS position reports appear as dots on a map. Connect them in timestamp order by tapping sequentially — wrong order means penalties, speed earns bonuses. As rounds progress, more dots appear and decoy callsigns creep in.

Track Ribbon Relief

VFR Track Relief Printing Jan 11

Topographic puzzle — draw a VFR flight route that follows terrain at safe altitude. Score points for following valleys, lose points for clipping peaks, and earn bonuses for hitting waypoints across 5 procedurally generated maps.

Skip Pattern Memory

Memorize ionospheric propagation patterns on a chessboard grid, then recreate them. Watch out for the skip zone!

Spore Print Match

Match mushrooms to their spore prints by remembering the preview animation. Drag and drop to identify species!

Spore Tracer

Trace gill patterns from center outward to create spore prints and identify mushrooms.

Star Tracer

Trace constellations in a rotating 3D star field before time runs out.

Twilight Sextant

Celestial Navigation by Sextant May 24

Measure celestial angles with a virtual sextant during the narrow twilight window. Precision and timing are everything.

Torch Trace

Bicycle Frame Brazing May 20

Master the art of bicycle frame brazing by tracing smooth, steady torch paths around frame joints. Heat evenly, flow the silver, and build a perfect frame.

Terrarium Layers

Terrarium Building May 3

Build a layered terrarium by dropping materials with realistic physics

Thermal Lace Weaver

Thermocouple Lace Making May 1

Thermocouple Lace Making

Tension & Tangle

Bronze Wool Spinning Apr 27

Control spindle tension to spin bronze wool into thread. Stay in the golden zone, catch floating tufts, and manage metal fatigue.

Tight Wind

Bronze Wire Coil Pickup Winding Apr 27

Wind a bronze wire pickup coil by managing feed rate and tension. Match the bobbin speed to lay 3000 turns without snapping the wire.

Tine Tuner

Kalimba Making Apr 21

Drag kalimba tines to tune them by ear — match all 8 pitches to complete your handcrafted instrument.

Flare Carver

Acoustic Phonograph Horn Carving Apr 20

Carve phonograph horn profiles and watch sound particles reveal your acoustic intuition

Whittle & Spin

Weather Vane Whittling Apr 19

Carve a balanced weather vane that responds to wind gusts accurately.

With the Grain

Spoon Carving Apr 18

Carve a wooden spoon by dragging with the grain. Read the wood's grain lines and always carve in the right direction—or suffer tear-out!

Verdigris

Vinegar Patina Etching on Bronze Apr 11

Tap to place vinegar drops on bronze and match patina patterns through cellular automata spreading.

Temper & Tint

Mordant-Dyed Tine Tempering Apr 10

Tap metal tines at the perfect moment when their heat color matches the target, then quench in mordant baths.

Typebar Tune-Up

Typewriter Restoration Apr 4

Restore a vintage typewriter by adjusting misaligned typebars until they all strike the same point on the platen.

Trace & Pour★

Cold Process Soap Making Mar 28

Tilt to pour viscous soap batter into mold cavities. Fill to the target line without overflowing as the soap thickens each level.

Mirror Maker

Telescope Mirror Grinding Mar 22

Grind a telescope mirror blank into a perfect parabola using careful strokes. Read Foucault test shadows to diagnose the surface.

Blueprint Exposure

Cyanotype Printing Mar 17

Time the perfect cyanotype exposure — pull the print when the Prussian blue reaches the target depth.

Thock Tuner

Mechanical Keyboard Building Mar 14

Calibrate your ears to match keyboard sound profiles by adjusting sliders.

Tension & Touch

Lockpicking Mar 12

Feel your way through a lock — probe pins, hold tension, and sense the binding order to pick the lock before time runs out.

The Pull

Analog Film Photography Development Mar 11

Time the perfect moment to pull photographic prints from the developer tray. Watch images emerge and pull at optimal density.

The Turning Point

Pen Turning Mar 10

Shape wooden pen blanks on a virtual lathe by dragging your cutting tool. Match the target profile without hitting the brass tube inside!

Waggle Dance Decoder

Beekeeping Mar 9

Watch the scout bee's waggle dance and decode where the flowers are! Learn real bee communication science.

Voicing the Void

Theremin Circuit Voicing Feb 25

Guide your hand through electromagnetic gates, matching pitch and volume to lock each frequency zone in this theremin-inspired calibration challenge.

Threshold Guardian

Fermentation Sensor Logging Feb 23

Monitor fermentation vessels and keep sensor readings in safe zones by adjusting thresholds and venting when critical.

Vane Calibration

Mechanical Weather Vane Instruments Feb 18

Rotate interconnected brass gears to align a mechanical weather vane with shifting wind directions.

Lunar Light Sorter

Lithophane Lunar Phase Calendars Feb 14

Hold lithophane panels to reveal moon phases and drag them into lunar cycle order before they fade.

Tension Feel

Lockpicking Feb 13

A lockpicking simulation where you adjust tension and feel for binding pins to pick the lock.

Lissajous Faces

Oscilloscope Art Portraiture Feb 12

Drag X-frequency, Y-frequency, and phase knobs to shape Lissajous curves on a virtual oscilloscope. Match the ghosted target pattern to at least 80% accuracy to advance through 5 rounds.

Ping-Triggered Stacks

Meteor-Scatter Shutter Triggers Feb 7

Meteors streak across the night sky, each sending a brief radio ping. Tap the SHUTTER button during the ping window to capture it. Longer streaks earn bonus points across an intensifying 60-second round.

Hiss to Harmony

Generative Soundscape Composition Feb 6

Place absorbing and reflecting panels in a top-down room grid to transform harsh noise into a pleasant ambience matching a target mood.

Lighttrail Tactics

Chess Move Lighttrail Journaling Feb 5

Solve 10 chess tactics puzzles by tapping the source and destination squares. Correct moves leave glowing light trails; wrong moves leave dark scars on the board.

Knight's Canon Chase

Knight's Tour Choral Canons Feb 4

Navigate a knight's tour on a 5x5 musical board. Each square plays a note; a ghost knight echoes your path 4 moves behind, forming a canon. Consonant intervals earn points, dissonant ones cost points.

Telemetry Chord Descent

Stratospheric Telemetry Chord Maps Jan 31

A balloon descends through 6 altitude stages. Listen to musical chords encoding telemetry, then tap the matching temperature, pressure, and humidity cards from a grid. Data arrives faster as altitude drops.

Radial Rush

QSO Radial VOR Dial Coasters Jan 30

Drag the OBS knob to dial in the target VOR radial — watch the CDI needle center and the FROM/TO flag flip, then tap LOCK. 10 rounds with decreasing time limits.

Windchime Morse Mixer

Callsign Morse Windchime Mobile Jan 25

Labelled windchime tubes hang from the screen, each showing a letter and its morse code. Tap them in the correct sequence to spell ham radio callsigns across 8 rounds.

Stitch the Signals

Morse Waypoint Flightpath Embroidery Jan 24

Tap numbered waypoint circles in the correct order to stitch a flight path spelling a target word. Each stitch plays a tone and shows the letter's morse code across 8 rounds.

Zugzwang Cadence Sprint

Zugzwang Cadence Etudes Jan 24

Study a chess endgame position and find the only safe move — or tap 'No Safe Move' if it's true zugzwang. 10 puzzles testing your king-and-pawn intuition.

Starboard Knight

Knight’s Tour Starfield Mosaic Jan 19

Tap valid knight moves across a starfield grid to visit every star tile exactly once. Visited cells light up as a glowing mosaic. Progressive difficulty from 5×5 to 7×7 boards with timer bonuses.

Arc Logger

QSO Constellation Overlays Jan 18

QSO Constellation Overlays — memorize star colors by frequency band, then draw arcs connecting matching pairs. Overlapping arcs cost points. 6 rounds of increasing difficulty.

Grain Drift

Generative Soundscape Composition Jan 17

Meditative collection game — glowing grains drift across the screen, each with a pitch. Tap grains that match the target chord to build harmony. Wrong grains add dissonance. 6 rounds.

Hiss Harmonizer

Generative Soundscape Composition Jan 16

Sound matching puzzle — drag a 2D filter control through a noisy signal to isolate hidden tones. X sets frequency, Y sets resonance. Find and crystallize every hidden tone to score.

Canon Clicker

Morse Canon Choir Loops Jan 15

Musical canon puzzle — replay morse melodies offset in time. Simon Says meets musical rounds with colored wave voices.

Grain Cloud Conductor

Generative Soundscape Composition Jan 4

A conducting game where you control a granular synthesis engine with swiping gestures. Match audience mood targets across 5 rounds of increasing difficulty.

Teaching the Static to Breathe

Generative Soundscape Composition Jan 3

Listen to a target soundscape with visible level bars, then drag sliders to recreate the biophony, geophony, and anthropophony mix. Score by accuracy and speed across 7 rounds.

Nib Flex Synth

Drag left to right across the canvas to trace a waveform, using vertical position to control nib flex and harmonics. Match the dotted target wave shape for accuracy and smoothness points across 5 rounds.

Thermal Ears

Drag a glider across the sky, listening and watching a LIFT indicator to find invisible thermals. Tap to log their cores, then see how close you were when the thermals are revealed across 5 rounds.

Sky Ink Loops

RC Light-Trace Calligraphy Jan 10

Trace faint calligraphy patterns with a glowing light trail. Score by accuracy and coverage across six progressive rounds while wind pushes your brush off course.