Very cool. Isn't the challenge here, though, simply to write an interpreter/emulator for that exact version of BASIC, rather than actually "porting a game", as

Very cool. Isn't the challenge here, though, simply to write an interpreter/emulator for that exact version of BASIC, rather than actually "porting a game", as such? Given the requirements it seems like attempting to re-write the original code would be a non-starter compared with any emulated approach.