The Batman: Arkham Collection is dirt cheap on Steam right now

To celebrate the franchise's 85th birthday, Warner Bros. is running massive discounts on games featuring the Caped Crusader on Steam. The Batman: Arkham Collection featuring Arkham Asylum, City, and Knight is 85% off. 

The collection features the Game Of The Year editions of Asylum and City with all DLCs and the Season Pass for Knight. Arkham Origins, the spin-off made by WB Montreal, is 80% off on the base game, while the entire bundle with DLCs included is 79% off. The 2.5D beat-em-up Arkham Origins Blackgate is 80% off.

You can also pick up the Deluxe Edition of Gotham Knights for 80% less. It's not the best Batman-related game out there, but still fun enough to waste a few hours in, especially considering the massive discount. 

Then we have the infamous Suicide Squad: Kill The Justice League. It's 90% off, and I'll leave it at that. The fighting games - Injustice: Gods Among Us and Injustice 2 can be picked up in a bundle with all DLCs for 80% and 90% off, respectively. While not directly related to Batman, The Watchmen: End is Nigh bundle packages two good superhero beat-em-ups for 80% off.

Also on discount is Scribblenauts Unmasked: A DC Comics Adventure, which is 85% off. The sale ends on February 26th.