Arena is a simulation of gladiatorial combat in the future, where the combatants are robots programmed by their “Controllers.” Fighting up to six to a side, the winning robots are those who still stand after the smoke clears. Robots are given intelligence, weapons, and armor to have a fighting chance of survival. Your position, luckily for you, is of one of the controllers. You are given a factory where you can build up to six robots, program them, and send them to the arena to fight the creations of your opponent.

ARENA is written to be both an enjoyable game and an introduction into
the world of assembly language. The language is based on Intel’s
Mnemonics, and thus is ideal for learning Z80, 808x, and 80×86. It is not
a complete set (missing are stack operations, interrupts, logical
operators, and other processor specific commands). Version 3 will be
geared after the 8088/8086 processor, to help all those with IBM PCs and
compatibles. This program is designed to run on the above machine, and
any machine that uses MS-DOS.