As promised, Valve has released top-down co-op shooter Alien Swarm on Steam, free of charge. Have fun! https://kotaku.com/valve-unleashes-an-alien-swarm-on-steam ...
As per a new study, Dyson spheres around faint stars in the galaxy could offer new techno-signatures clues.
GameSpot may get a commission from retail offers. If you've been looking for an online co-op game with some Alien vibes, the upcoming top-down tactical shooter DarkSwarm might just tickle your fancy.