A Space Invaders-like game for the unexpanded Commodore VIC20. Alien movement is pixel-based. The game is simple at the beginning, but it becomes really fast after having defeated a few alien waves. It should be intriguing as the gameplay differs a little from the original arcade game.

Download the .D64 disk image and smart open it with VICE xVIC emulator to give it a try.

Release candidate 1 for distribution on cassette and floppy disks.

This version should be compatible with PAL and NTSC systems. Playing on a NTSC computer makes the game a little harder, though, as the speed is slightly faster. I tested it on-the-field with a real PAL VIC20 and some persons reported a correct behavior with NTSC systems.