If you've got a completely reasonable desire to spend your weekend sneaking through a creepy swamp and getting ambushed by monsters, what stellar luck you have, because Hunt: Showdown (opens in new tab) is free until Monday.
Crytek's FPS is a competitive bounty game with monsters. You've got a monster to hunt and a bounty to collect, which will probably lead to your death, but you've also got to worry about other hunters. In my experience, they're sneakier and deadlier than any of Hunt: Showdown's supernatural beasties. Not nearly as terrifying, mind.
It's still in Early Access, but Crytek has been steadily updating it with new monsters, like this burning fella with anger issues (opens in new tab), and a new map, though like a lot of Early Access multiplayer games, it's had a hard time keeping people around. It should be busier this weekend, though, so even if you've already got the game, the event's a good excuse to jump back in.
Hunt: Showdown's free weekend will run on Steam (opens in new tab) until Monday at 6 pm BST/10 am PT. If it ends up tickling your fancy, it's also on sale for 20 percent off.