Hacker News Games

Kids' app for ages 4-7: short sets of adaptive math, grammar and logic problems, with daily screen-time limits.

Overlay DDR-style arrows on any YouTube video and play with keyboard, controller, or USB dance pad

Browser game for practicing piano chords: a random chord is shown and you play it by keyboard, mouse, touch or MIDI.

Two-player bot-programming contest on Conway's Game of Life; code a bot to outscore your rival

Browser game that teaches small-business AI transformation concepts through short levels and simple decisions

Match-3 puzzle: swap adjacent fruits to line up three or more and clear 25-move levels.

Word search puzzles built from IT and programming vocabulary, with classic, debug and time attack modes

Idle clicker: serve coffee, hire baristas, buy upgrades and prestige to grow a cafe empire.

Game Boy Advance port of the flash puzzle Bloxorz: roll the block to the goal hole without toppling off.