A novel twist on the familiar Asteroids theme wherein your trusty spaceship suffers a radical refit and becomes not unlike a miniature submarine. This is just as well as the scenario has changed from outer to inner space, and those hurtling asteroids have become a deadly all-consuming virus, intent on infesting the heart of your beloved VCS. Definitely bad news.

It seems you have no choice but to navigate the murky Atari bloodstream and attempt to eradicate the ghastly growth. Unfortunately, the odds are against you. The enemy is pretty damn tough. Hit the main viral colony and it'll divide into a sub-colony, strike again and it'll shrink down into a creeping crawling amoebic sliver. Ugh. The graphics are very good indeed, with the globular amoebas being convincingly depicted, and the sound, while modestly used, is quite effective. There's no 'hyperspace' faciltiy (or equivalent) but you're blessed with a very handy trio of shields and two shooting styles.

Purists may well blanch, but I rather prefer this 'medical' Asteroids to the official Atari conversion. There's no garish colours to contend with... just very heavy action. Neat stuff.