The multiplayer first-person shooter Natural Selection 2 is free-to-play throughout the weekend, as part of another one of Steam’s free weekend promotions. You can play the game for free until Sunday, and if you want to keep playing after that it’s going to be discounted to only $5.

The game is developed by Unknown Worlds Entertainment and currently holds a score of 9/10 on Steam. It’s a good game; Steam doesn’t do these offers with games people don’t want to play.