Space Invaders (Psion Computers) for the ZX81

https://www.youtube.com/watch?v=zpBk3YhNuj4

#ZX81 #Action #FixedScreenShooter #FixedScreenShootemup #FixedScreenShmup #Shooter #Shootemup #Shmup #SpaceInvadersClone #SpaceInvadersVariant #SpaceInvadersRipoff #PsionComputers