Geneshift, an intense top-down shooter action game with a certain classic GTA2 flair thanks to the vehicle system is currently 100% off for a few days.
Previously known as Subvein and also Mutant Factions, it's been through a few different faces over the years. It was also known as Geneshift: Battle Royale Turbo until recently where the developer has settled back on just calling it Geneshift. The current focus has been on the Battle Royale mode, which is looking good but it did just recently introduce a daily survival run which is also quite a test of skill.
I've had masses of fun with it, and recently it's had a huge amount of tweaks to make the experience quite a lot more streamlined and so a lot more fun too. If you already own it and haven't played it in some time, this is going to be a great time to jump back in.
From now until June 10, you can claim your free copy from Steam. Nothing temporary about this, once you claim it you get to keep it as it's a giveaway! During this time, the "Supporter's Edition" DLC which gives a single-player/co-op campaign and a few other bits is also 40% off until June 15.
Grab a copy of Geneshift free on Steam, don't pass up a great 100% off deal on a fun game.