Omega Chase (non-deluxe version) is the predecessor to Omega Chase Deluxe and was a download only version of the game. While there are a number of differences between Omega Chase and Omega Chase Deluxe, Omega Chase is included on Omega Chase Deluxe along with the game Zap. The main difference between the two versions of the game is that with Omega Chase, the enemies travel in only one direction around the center of the track, but in Omega Chase Deluxe, the enemies travel from both sides simultaneously. Creator Christopher Tumber felt there was no need to release the original file on cartridge as it was included on the compilation of the game.
More Invaders! is the sequel to Vector Vaders. It's how John wanted VV to look originally, but due to his lack of Vectrex programming experience at the time, couldn't make it so. More Invaders! has practically no screen flicker and plays very fast (compared to its predecessor), and has some enhanced features, such as splitting Invaders, trick saucers and special bonuses!
Eons have passed... yet despite apparent annihilation in the original ARKANOID game, Dimension-controlling force DOH has come back to life, and occupying the huge spacecraft ZARG, has entered our universe. ARKANOID-type spacefighter MIXTEC runs through long forgotten computer data until it finds the answer to this threat... VAUS 2 is launched and speeds towards the threatening alien presence, before it can extract its revenge... "Arkanoid II"!
Unlike the original game, the sequel was released only in Japan.