Reading Log Timeline
A vertical timeline of books read, month by month. Cards float freely beside a yyyymm axis; tap one to unfold the reading memo.
Playground
Contents, Works, and ...
Eight-a-Side Soccer
A full top-down 8v8 soccer match — dribble, thread through balls, and steer your shots past diving keepers, with corners, throw-ins and a CPU team to beat.
Melody Sketcher
Hum or whistle into your mic and watch it become editable notes — then download a real MIDI file. Pitch detection, piano-roll editing, and synthesis, all in your browser.
Palette Extractor
Pull a color palette out of any image — drag & drop, paste, or pick a sample, then click to copy. Everything runs in your browser.
Shiome — Reading Currents, June 2026
An interactive digest of 23 articles from June 2026, distilled into 6 thematic currents drifting along a canvas shoreline. Hover the pebbles, pick a current, read its essence (in Japanese).
Agentic Atlas — July 2026 (Japanese Edition)
The Japanese-language edition of the Agentic Atlas: the same interactive field guide to agent-era software development — 6 domains, 24 practices — with all field notes translated into Japanese.
Agentic Atlas — July 2026
An interactive field atlas of software development best practice in the age of coding agents: 6 domains and 24 practices, navigable as a radial map, an index tree, and numbered field notes.
Lumen Drift III
The third journey of the little light — hook grapple beacons, flip gravity to run along ceilings, ride winds and conveyor belts across a living marble void, and crack open the Marble Heart.
Lumen Drift II
The sequel to Lumen Drift — wall-jump, glide and dash across three zones of the void, keep your light burning through the Ember Depths, and bring down the Void Maw.
Marble Image Generator 2
Self-evolving marble textures that drift, warp, and shift through palettes autonomously — hit Freeze to lock a moment, Flow to let it breathe again.
Disco Masked Dancer
Masquerade-masked dancers groove under a spinning mirror ball in a neon club — a seamless 3D-rendered loop.
Marble Image Generator
Generate organic marble textures from around ten live parameters — noise, turbulence, veins, colors and grain — rendered on Canvas.
Penalty Shootout
Swipe to curl the ball past the keeper into the top corner — a mobile-friendly soccer penalty game.
Lumen Drift
A neon platformer where you guide a glowing orb of light through a dark void — double-jump and dash across drifting platforms, gather light shards, and ride the portal home.
Summer Engawa
A Showa-era electric fan oscillates beside a glass wind chime on a wooden veranda — half realistic, half cheaply illustrated, with a procedurally synthesised chime.
Abnormal Editorial
Ten fictional editorial spreads — bath houses where you can cry, bakeries that bake tomorrow's bread, parks where a single summer never leaves — typeset in the invented Aevith script.
Aevith Translator
Translate any phrase into Aevith — a fictional script of geometric glyphs woven from spines, crowns, branches, and feet.
Hallucination Engine
Domain-warped particle streams fracture into chromatic layers — a flow field that folds space through itself, tearing apart in periodic glitch cascades.
Beer Pouring Master
Pour the perfect draft beer — tilt the mug, control the flow, and aim for a flawless golden pour with a creamy head
Bird Flock
A flock of birds steered by Perlin-noise wind and boids rules. Flight speed, cohesion, alignment, and personal spacing all change automatically with Japan Standard Time — roosting at night, formation flight in the morning, murmuration at dusk.
Dancing Penguin Mirrorball
Classic black-and-white penguins rave under a spinning disco mirror ball. Tap anywhere to reshuffle the crowd.
Penguin Parade
Polygon-built penguins of various sizes, speeds, and colors waddle across the screen. Tune five parameters to shape the parade.
Flow Field
Perlin noise flow field where hundreds of particles follow a smooth vector field in real time. Six parameters to tune the look.
Beat Strip Sequencer
A strip-based beat sequencer. Place 8 drum sounds freely on a continuous timeline and loop play.
Choice Selector
Enter your choices and randomly pick one — let fate decide!
Drum Beat Sequencer
A grid-based drum sequencer with 8 instruments and expandable steps. Click cells to compose beats directly on the timeline.
Drum Pad Loop Machine
A drum pad loop machine with 4 instruments and a step sequencer. Tap pads to build beats that loop automatically.
Manuscript Paper Counter
Convert text to Japanese manuscript paper (Genkō yōshi) format with character count
Typing Animation
Text typing animation with 4 speed levels - tap to change speed
Lights Out
4×4 grid puzzle - Turn off all the lights to win!
Bulls and Cows
5-digit number guessing game with Bulls and Cows feedback
Breakout (Button Control)
Brick-breaking game with on-screen button controls
Breakout
Classic brick-breaking game with paddle control
Floating Characters
Cute geometric characters with faces floating in 3D space
Particles
Interactive particle system following mouse cursor