Core War is a game played by two or more programs written in an
assembly language called Redcode and run in a virtual computer called
MARS (Memory Array Redcode Simulator). The object of the game is to
cause all processes of the opposing program to terminate, leaving
your program in sole possession of the machine. There are Core War
systems available for most computer platforms. Redcode has been
standardized by the ICWS, and is therefore transportable between all
standard Core War systems.
- rec.games.corewar faq
7 Majo 2004 modifita.