Sector One is a mutant hybrid of Alien Breed and Smash TV. The player guides his space marine (who bears a curious resemblance to Rambo) up the vertically-scrolling corridors of an alien-infested space station, blasting the gruesome insectoid aliens (who have the rather impressive ability to spit fireballs) and the scuttling face-huggers, while avoiding the pools of acid blood and the alien claws poking through the broken walkways.
The game was created using the Shoot-'Em-Up Construction Kit and it's not bad for a game of its type. However, like me you'll soon find your patience tested by the abysmal collision detection, whereby shots that are a good centimetre away from you on-screen still kill! This wouldn't be so annoying if your marine was a bit nippier on his feet and could dodge in time... but he isn't. And the situation isn't made any better by the fact that to scroll the play area you have to walk right near the top of the screen, meaning you have even less time to avoid the nasties and their attacks.