AMOS is a dialect of the BASIC programming language developed specifically for the Amiga computer by François Lionet and Constantin Sotiropoulos, first released in 1990 by Mandarin Software. It was optimized for game development, featuring built-in commands for sprites (BOBs), collision detection, sound, and animation that provided direct access to Amiga hardware capabilities without requiring complex programming. The language became extremely popular among hobbyists and the demoscene, with AMOS Professional later adding a full-screen editor, compiler support, and advanced debugging tools that enabled creation of commercial-quality games.