Prototypes by system/BBC Micro

Alien Destroyers II (prototype)

Amnesia (Dec 15, 1987 prototype)

Blockbuster (Q*Boyd prototype)

Castle Quest (Castle Raider prototype)

Citadel (Early prototype)

Citadel (Oct 22, 1985 prototype)

Cookie (Apr 28, 1984 prototype)

Crazy Balloon (BBC Micro prototype)

Crazy Painter (Amidar prototype)

Crystal Castles (BBC Micro prototype)

Danger UXB (Blockman prototype)

Daxis (Droids prototype)

Daxis (Shooter prototype)

Deathstar (Sinistar prototype)

Donkey Kong Jr. (BBC Micro prototype)

Eyes (BBC Micro prototype)

Felix Meets the Evil Weevils (Acornsoft prototype)

Frogman (prototype)

Fruit Catcher (prototype)

Ghouls (Ghoulies prototype)

Jeremy Goes Jumping (prototype)

Joust (BBC Micro prototype)

Spitfire Flight Simulator (Superior prototype)

Starship Command (prototype)

Swoop (prototype)

Ultron (Alligata prototype)

Underside (prototype)

Volcano (prototype)

Wet Zone (Arcadia prototype)