In collecting my library of MZ-80K programs and games, I realized I had 5 different versions of Space Invaders. Here they are presented in their full monochromatic glory.

Invaders 2 and Invaders 3 actually seem to be the same game, however Invaders 2 seems to be the German version that does not have the cool intro screens, and Invaders 3 is the Japanese version with all the extra fluff. Invaders 1 is actually my favorite version and was kindly sent to me by Yoshiaki Kamegaki. This version is most like the original arcade game.

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Space Invaders 1

Space Invaders 2

Space Invaders 3

Space Invaders 4

Space Invaders 5