The 1991 classic,
rebuilt exactly.

All 111 original levels, in your browser, with the original graphics, sounds and music. No install, no account needed — just play.

SUPAPLEX — Murphy's Law

Infotrons000 Red disks00 Time00:00 Best--:--

Arrows move  ·  Space+arrow eat without moving  ·  Space (held) drop a red disk  ·  P pause  ·  Esc blow yourself up  ·  R restart  ·  M music  ·  audio starts on your first keypress. Every game is recorded: your best run becomes a replay in the original demo format, which you can watch and download as .SP — and with a free account it goes on the leaderboard, where the server re-simulates it to prove the time.

23,242

ticks cross-checked

Every tick of all 10 original demos, hash-identical to the disassembled game.

6,894

historic solutions replayed

Community solutions from 25 years, every one of them won in this engine.

0

verified runs here

Times on this site are proven by a replay the server re-simulates.

How the engine was verified →