3D Monster Maze, one of the best games in 1981. Too big for a 1K ZX81, so you had to get a whopping 16K ram pack! Though the entirety of the original 8bit Elite fitted in 32K on a BBC Micro. Wasn't what made it a good game, it just made it fit the limits of the computer.
Mein ZX81 konnte das nicht.
Internet? Is like you have a modem? I can't get one of those on a Sinclair ZX81.
That was my original reason for looking - the Omni has several ROMs, standards ones you'd expect like 48K, 128K, and various diagnostics but also ZX81+ which appears to be a ZX Spectrum based ZX81 emulator, obviously I lose the divmmc when in that ROM so wanted something I could load .p files with
Sag, dass Du alt bist, ohne zu sagen, dass Du alt bist: „Mist, ich bin auf den ZX81 getreten. Jetzt ist der kaputt.“