This is Centipede given a spacy flavour by modifying the sonics and transmuting homely creepy-crawlies into galactic beings. The main adversary is now composed of rotating segments and the spider becomes a fireball. Missiles and motherships also demand your attention.
In essence this program is virtually the same as Cosmic Split but with minor graphical variations. Even for a newish machine like the C64, there are an awful lot of centipedes in need of extermination.
On the whole, a worthy attempt at diversifying a familiar them with all the usual problems still facing the player.