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.

Both versions of the system now come with Batman: Arkham Shadow for free ($75 value) which is out today and the 128GB version ...