I just started playing the Arkham series myself. I owned Asylum and City on Origin for quite some time now but couldn't get more than a few minutes of game play before it would crash (or, more often that not, not even launch). Steam had them on sale for $5 and $7 so I repurchased them and haven't had any issues...go figure.
I finished Asylum last night and.......daaaaaayyyyyyymmmnn......that was a cool game. Definitely some cool stuff I didn't see coming and tripped me out but don't know how far you are so I wont say anything else.
Now playing:
Batman: Arkham City...just started today.
Edge of Space- This game is really shaping up to be something cool and plays very different from Terraria (resource management and combat are emphasized a lot more in EoS).