Hacker News Games

Guess the hidden coordinate in n-dimensional space using distance and color clues

Online Riichi Mahjong: play the 4-player tile game as a guest or registered user, versus bots or invited players.

Browser puzzle game where you uncover hidden rules for 5x5 binary grids, writing JavaScript to test theories.

Social deduction party game: join a room and guess your Secret Santa from hints, chat, and mini-games

Casual Android game: Santa snowballs monsters in the Frosty Forest, turning them back into Christmas gifts.

Short 3D game where you clear levels by writing regular expressions

Space Invaders clone written in 8086 assembly; builds to a tiny DOS .com and runs in DOSBox.

Text-based holiday escape-room adventure; playable in the browser or via an MCP client.

Real-time multiplayer trivia: one host screen shows questions while players answer from phones