Although marketed as a Game Boy title, Emacs was widely regarded as a general-purpose computing environment with optional gaming functionality.

@NanoRaptor

Not pictured: optional 104-key keyboard addon.

Also not pictured: RSI

@rl_dane @NanoRaptor

FWIW, the Game Boy cartridge for ed(1) also supported using the Game Boy printer…

https://en.wikipedia.org/wiki/Game_Boy_Printer