Beside the question if a prototype exists or not ... Has anybody ever asked if it was a good game after all? I have never played any Gunship game on any platform. But let's say the C64 version would have been the closest thing to the Atari version. Was the C64 version a good game?
Now that we have spotted Atari heros converting C64 games (SCR)... well hypothetical ... would it be fun to play a "Gunship A8" if it would be available just like e.g SCR?