http://store.steampowered.com/app/630/

http://store.steampowered.com/news/4081/

http://www.alienswarm.com/

Basically it was originally a mod for UT04, Valve hired the team and they are now releasing a Source ported version. They're also releasing all the code, to encourage and help modders it seems.

From what I can tell, this was going to be a paid indie game (still on Source) called Alien Swarm: Infested, but it went quiet around 3 years ago (presumably when Valve hired them) and they have obviously finished it and polished it in the meantime.

Awesome.

It's out, for those who want it.

Some useful commands, including moving the reload bar and going first person:

http://forums.steampowered.com/forums/s ... ?t=1371124

fun game ;D

Sure.

Also:

We need more content

Yeah, I'm hoping Valve will do a TF2 and start releasing all the good community maps into the game officially (helps us with finding the good ones and makes it easier to play) and maybe release some of their own.

I wish we had Linux dedis aswell, it gets quite laggy sometimes.

While the AI director already exists in game, it seems like it's being made official:

http://www.rockpapershotgun.com/2010/08 ... -director/

Interesting interview thing, talks about a fair few things:

http://www.pcgamer.com/2010/09/12/inter ... m-is-free/

Si managed to find some semi decent maps already we were playing through, not fantastic but pretty good Quite enjoyed the one campaign we did