>>321970
>>321974
>>322222 (Nice)
Zombie Shooter is a prequel to Alien Shooter games, essentially before the aliens overrun Earth we were on course to becoming a Resident Evil like universe where not-Umbrella was experimenting on zombies. Story is pretty generic in both games, an outbreak has lead to a breach and there is zombies everywhere, you are there to kill all the zombies and kill the biggest and most evil zombie at the end. The most interesting part of the story is that in 2 your main motivation is actually rescuing your spouse, altho in the 1.0 version it was just your wife, meaning that if you played as a female character you were canonically a lesbian. Sigma Team patched that out so that if you play a female character now, you are rescuing your husband.
Heavily recommend playing the Alien Shooter games btw, if you are going to play Alien Shooter 2/Vengeance make sure to play the original release that has RPG elements since for some god forsaken reason, the later releases of AS2 and then sequels like Zombie Shooter 2 all have very watered down skill trees in comparison to the more hardcore RPG elements of the original. Sigma Team is a casual game studio, now a flat out mobile game studio, so I guess their target audience didn't like the challenge.