https://www.pcgamer.com/co-op-dwarf-shooter-deep-rock-galactic-is-free-to-play-until-monday/

Deep Rock Galactic is a space dwarf mining sim co-op shooter, and if you have no idea what that means, all I can say is, welcome to the club. (It's a bit like Left 4 Dead). Fortunately for the curious among you, this weekend is the perfect time to figure it out: It's the one-year anniversary of the game's Early Access release, and so developer Ghost Ship games is making it free to play for the weekend. 

The studio also warned that the Deep Rock Galactic price will be going up in late March, from $25 to $30/£25/€28, reflecting its expanded plans for the game. The price change will have no impact on current owners or anyone who picks it up prior to the hike.