PC Gamer has a little Alien Swarm thing

In case you want to try the first-person play-style of Alien Swarm:

Alien Swarm in first person

Alien Swarm Level Generator

From Valve Developer Community, a quick way to make a custom map you can play with you friends in-game:

LINK

I've only played this game for one night, for a short period of time and I'm amazed that this game is being released for free. I want to kiss you, valve.

Alien Swarm

i play games once a month. this is a new game that i will probably play, and i would enjoy it even more if you all would play with me. it's called alien swarm, and it's available as a free download on steam on monday. won't you join me? won't you?

Alien Swarm