Here is some more of that new thing:

http://www.goodluckcowboy.co.uk/every-day-a-game/alien-swarm

http://notactuallyeveryday.tumblr.com/post/72381647870/alien-swarm

“Alien Swarm is a free, top-down, fast-paced shooter in which you [and a team of up to 3 other players] gun down. . . Well, swarms of aliens.

And let me tell you, it will be a team of up to 3 other players. To try and fight your way through this alone is a near impossible task, Alien Swarm is a very difficult game. It’s great. The aliens alone aren’t strong. They are limited to melee or incredibly slow ranged missiles and are dispatched easily. But of course, there are swarms of them. Without quick maneuvering and teamwork you can become easily surrounded and you’ll soon discover that the player characters are about as hardy as the aliens you’ve been gunning down.”