A VIC20-version of the browser-/mobile game of the same name. Just pick the lighter color. Sounds too easy, but isn't.
No retreat, no surrender!
One hand tied behind my back
Other digital platform
Commodore's VIC-20 is a computer from 1980 with 5 Kilobte of RAM of which 3.5 KB are usable to BASIC. My game uses a little over 2 KB and also uses some of the RAM for the full screen-gameplay. Made with BasEdit for the BASIC-parts and Vic20PrgGen for the machine-language routines.
Runs on unexpanded PAL VIC-20. Or just use an emulator like VICE.