QS Invaders for the ZX81 www.youtube.com/watch?v=gMuV...#QSInvaders#ZX81#Action#Shooter#Shoot'emup#FixedscreenShooter#FixedscreenShoot'emup#SpaceInvadersClone#SpaceInvadersRipoff#SpaceInvadersVariant#QuicksilvaLtd#Quicksilva
YouTube video by Highretrogamelord