You can try game here: https://zahard.github.io/box256js/
Implementation of fun programming game http://box-256.com/ All credits to author https://twitter.com/JuhaKiili
Original game contain 64 editable lines of code, wich make on some devices hard to read all of this small characters, so to fix it and also just for fun i made almost exact copy with JS and Canvas with main change - now user can edit only first 32 lines, but memory still has all 256 bytes. So it easy to read and play i guess.
You can find game manual here http://box-256.com/manual/
