If you click on a link and make a purchase we may receive a small commission. Read our editorial policy.

Valve releases Alien Swarm for free

New Source version of old UT mod.

Valve will release Alien Swarm - a four-player, co-operative, top-down shooter - on Steam for free today.

The PC game is an entirely new version of an old mod for Unreal Tournament 2004. The developers, Black Cat Games, are now employed by Valve, and have remade their game in Valve's Source engine, as RPS revealed last week.

The free Steam download includes the complete game code and mod tools for you to have your wicked way with.

You can watch a trailer at the Alien Swarm site. Looks tasty, and frankly, for nothing, it would be rude not to. The game unlocks tonight.

Topics in this article

Follow topics and we'll email you when we publish something new about them.  Manage your notification settings.

About the Author
Oli Welsh avatar

Oli Welsh


Oli was Eurogamer's MMO Editor before a seven-year stint as Editor. He worked here for a colossal 14 years, shaping the website and leading it.

Eurogamer.net logo

Buy things with globes on them

And other lovely Eurogamer merch in our official store!

Explore our store
Eurogamer.net Merch