Millipede/Versions

Atari 2600
Developed by Atari in 1984.

Atari 400/800/XL/XE
Developed by Atari in 1984. A prototype of the same program was being developed for the Atari 5200, but was ultimately canceled.

NES
Developed by HAL and released for the Famicom in 1987. Released for the NES in 1988.

Game Boy
Never released as a single game, but included as part of the Game Boy Arcade Classics volume 2 cartridge along with Centipede. Released by Nintendo in 1995.