The Batman Arkham series has seen a lot of great games, but not every entry in Warner Bros' DC franchise is equal.

Epic Games Store customers on PC can now get six of the best "Batman" games for free, including "Arkham Asylum," "Arkham City," "Arkham Knight," and all three of the "LEGO Batman" games.

SUBSCRIBE! Never Miss A Video: <a href=" Insider Episode 6: In this jam-packed episode, they bring you the latest brand new gameplay straight from E3. Feast your eyeballs on brand new "Noisy Predator" ...