Hacker News Games

Hyperbolic sliding puzzle: twelve tiles ring one empty square like a clock face; restore every tile to its home.

Sorting puzzle based on Post's Correspondence Problem: pair up envelopes and stamps to reach the mailbox.

Make an equation from today's date using every digit in order in this daily math puzzle

Solve short pattern and logic puzzles in themed journeys with a shared daily challenge

Open-source collection of puzzle games built on mathematical theorems, each with a provable best answer.

A math runner where a correct arithmetic answer unlocks each jump

Daily arithmetic puzzle: combine number tiles to hit the target exactly, scored like golf against a par of 4.

Drag number tiles across a grid so every chain of tiles totals exactly 12

Platformer where you type a math function f(x); the drawn curve becomes the track and physics carry the kart over gaps.