Hacker News Games

Conway's Hackenbush web game: remove colored edges from a graph in Normal or Miserere play vs the computer or a local friend.

Collection of browser math and strategy games, including a 20x20 territory-capture game vs AI.

Daily estimation game: guess the oddball number within 20% in six tries

Factor semiprime numbers as a puzzle; a visual carry-adder circuit

3D sudoku on a cube using hexadecimal digits (0-9, A-F) in place of 1-9.

Memory trainer where you recall digits of pi at your own pace or in configurable challenge runs.

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

Fix matchstick equations by moving a single match to make each one correct

Dice-and-grid puzzle: place rolls and connect matching numbers with vertical or horizontal lines.