Atari 8-bit
- Nanorogue ATR disk: Nanorogue, Matriculated Rain, New Year's programs, and more, with launcher.
Insert as disk 1, reboot!
Atari 400/800: Remove BASIC cartridge first.
Atari XL/XE: Hold down OPTION when booting, to disable built-in BASIC.
Atari800MacX, other emulators: Control > Disable BASIC. - blog posts on Atari 8-bit