"Can you save the galaxy by blowing up the alien-inhabited planet... and get off the planet before you explode too? You must find your way through the deep underground maze while battling with the Planet Protectors. If you can get to the centre, plant your bomb and try to find your way out. It's only a matter of seconds before the planet goes BOOM!"
Cosmic Chasm is a wonderfully complex space adventure that combines elements of shooters and maze games, topped off with a dose of strategy.
Licensing agreements between Cinematronics and GCE even brought the original Vectrex title Cosmic Chasm to the arcade, making it the first console game to become a coin-op, instead of the usual other way around.