Its a free game you can download on your computer, its about like you can play as humans or aliens. If your humans you can like build sentries to kill the aliens. And as aliens you can climb on walls/ceilings and stuff. I think if the aliens/humans kill enough of the other team they can get better classes and stuff. The aliens can make egg things that spawn bot aliens I think. And in one game mode the aliens have to protect a overmind or something like that. Theres an alien that can plant traps and stuff. I forget the name but I know it was totally free to play and I used to love climbing on walls. If you know a game like this tell me the name or post a link to the website.
