Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. – Steam
I started playing Alien Swarm a few months ago when I went through a phase of loving F2P games. But unlike any other free-to-play game, Alien Swarm brings out the most unique style of action than before. The goal is to complete the chosen stage, fighting of extra-terrestrial beasts aching for the taste of human blood. Throughout the game, you can upgrade and unlock guns and equipment. The best part about this, is that you can play online. With friends or strangers. The fun is never-ending as the stages get progressively harder. If you have ever played Call of Duty’s arcade-styled minigame, Dead Ops Arcade, then Alien Swarm will be familiar. Alien Swarm is a must get for any kind of person. Don’t like the intensity and pressure of going online? You can also practice offline with bots. No more looking like a fool in front of your friends! When you start a game, you will need to pick a role. Each role will carry out its own certain tasks. For example; if you choose to be an engineer, your task is to open doors and disable equipment to protect your fellow players. If you are a medic, you will heal other players. Head over to the Steam store now and get Alien Swarm for free!