I was gonna say that Tetris has to be up there. I wrote Tetris for the TI-82, but never Doom; however, I have ported Doom to a (theoretically) credit-card sized platform, but not Tetris (though Tetris could run on a custom emulator on the same platform).
Tetris takes a lot less to run. You just need a few LEDs or an apartment building to display Tetris. Also somebody probably ported Tetris into Doom making all Doom ports into Tetris ports.
Guinness World Records thinks it’s pretty close between Tetris and Doom if we’re counting unofficial ports https://www.guinnessworldrecords.com/world-records/most-ported-computer-game
I was gonna say that Tetris has to be up there. I wrote Tetris for the TI-82, but never Doom; however, I have ported Doom to a (theoretically) credit-card sized platform, but not Tetris (though Tetris could run on a custom emulator on the same platform).
Tetris takes a lot less to run. You just need a few LEDs or an apartment building to display Tetris. Also somebody probably ported Tetris into Doom making all Doom ports into Tetris ports.
New challenge: port Doom to Tetris