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Pokedex, type chart, damage calculator, and team analyzer.

A rhythm game inspired by Project SEKAI. Tap, hold, and flick to the beat.

A simple piano you can play in the browser.

Metronome, flash cards, scales, and practice timer.

Listen to π, estimate it with Monte Carlo, and memorize digits.

Paste text and hear it as a melody. Japanese vowels map cleanly to pentatonic scales.

Break all the bricks with a bouncing ball.

Classic minesweeper. 9x9 grid, 10 mines.

A guitar with fretboard. Press frets, then strum.

Click to shatter the glass. Each fragment is a piece of the whole.

Real-time starry sky with constellations. Drag to look around.

A parody fighting game. Pick リュウジ or ケンタ and fight!

Splash colorful ink on the wall. Click, drag, and make a mess.

Countdown, Pomodoro, Stopwatch with laps and memo.