For a system with such good potential, it has to be said that Tynesoft made a complete and utter mess of this one.
The Atari 400 & 800 both had hardware sprites so the jerky movement of the guardians is totally inexcusable.
Even the low resolution graphics are shocking. Who on earth drew them? They look like the sprites were designed by a 5 year old.
The music, though, is great. Rob Hubbard at his best.