StepWise
100+ data structures and algorithms, every step narrated with its pseudocode line and variables; step back, share as a link, embed in Canvas.
Apps / Tetromino Arcade
A falling-block puzzle game with modern rules, seven modes, a computer opponent, replays and a daily challenge.
A full falling-block puzzle game that plays in your browser with modern competitive rules: hold, ghost piece, T-spins, combos and perfect clears. Choose from seven modes (Marathon, Sprint, Ultra, Dig, Master, Zen, and Versus against a computer opponent with four difficulty levels), plus a Daily Sprint where everyone gets the same pieces. Play with keyboard, gamepad or touch, rebind keys, pick a theme, and save exact replays of your games.
Records stay in your own browser, so there is no shared leaderboard for the daily challenge.
100+ data structures and algorithms, every step narrated with its pseudocode line and variables; step back, share as a link, embed in Canvas.
Draw in the hyperbolic disk and watch every stroke tile to infinity.
An AI teaching assistant that asks before it tells and won’t hand over homework. Yusuf Pisan’s data structures students at UW Bothell use it now.