https://www.gamespot.com/articles/last-chance-grab-this-free-steam-pc-game-fast/1100-6461134/

As is often the case on the deals side of the video game world, it's a good time to be a PC gamer. Right now you can head over to Steam and download Insurgency for free. It's only free until August 15, but if you grab the game before it goes back to full price, you can keep it and play it forever.

Originally released in 2014, Insurgency is an online first-person shooter that aims for realism. It doesn't give you a map or a radar to keep track of your location or where enemies are. Death comes fast, as players can only take one or two bullets before going down. You don't even get on-screen crosshairs aside from the metal on your gun when you look down-sights.