Type-in listings were commonplace for the 8-bit home computers, thanks to the fact that most of them booted into some variant of BASIC. And the Atari 8-bit was no exception.
More ambitious programmers would compose games in machine code or assembly language, then convert their programs into DATA statements that could be read by a BASIC program to generate an executable file on a cassette or floppy disk. Into Deep is probably one of the most ambitious examples I’ve ever seen in this regard, and it shows in the final quality.
Check it out in the video below, and don’t forget to subscribe on YouTube for more!