Alien Swarm gameplay

Alien Swarm - gameplay

Alien Swarm is a freeware top-down shoot-em-up video game by Valve Corporation. It is a remake of the Alien Swarm mod for Unreal Tournament 2004, and it was developed by the original team, who were hired by Valve during the course of the development process.

Alien Swarm is a top-down shoot-em-up set at a 60-degree angle.

Four players can join a single co-operative game, the aim of which is to progress through science fiction-themed levels while eliminating waves of aliens.

Source:http://youtu.be/ND6zwMd9qNM
Alien Swarm - gameplay