Download game for free from https://adrianpilko.itch.io/zx81-jump skip to 4:00 for demo The Sinclair ZX81 https://en.m.wikipedia.org/wiki/ZX81 I used the excellent sprite editor by ChibiAkumas: https://www.chibiakumas.com/z80/simplesamples2.php https://github.com/AdrianPilko/ZX81-Jump-game/blob/main/jump.asm #zx81 #sinclairZX81 #assemblyLanguage