Frantic by SpiceWare is a game for Atari 2600/VCS inspired by Berzerk. Basically you have to kill everything that moves.

Changes:

Here’s the last planned update until next year! Besides the afore mentioned special room objects, there’s also updated humanoid and explosion graphics. The Harmony ROMs now crash Stella, so download the _stella_ version if you’re playing in the emulator.

http://www.atariage.com/forums/topic/186560-frantic-2600/page__st__225__p__2401642#entry2401642