You are Xenon Space Academy's fleet commander. Your mission is to reach planet Radon to protect it against Zorgon batlle star. On your journey you will have to fight against the combative Aards, kind of rotative and hypnotic birds and blobs, that divide when you shoot them for the first time. If you survive these two battles, you will have to cross an asteroid field to reach at last planet Radon. Once there, protect the planet against the Paratrons air attack. Your final mission is to destroy the Zorgon battle star!
Though Xenon was an early Oric game, it was one of the best shoot them up for this machine, revealing what the Oric could do. Not too hard, not to difficult, with various stages, Xenon 1 was a must have in all Oric owner library.