Hmm... I'm not sure. Batman: Arkham Asylum is kinda just the right level of mood for me though. Again, I don't know if it's my favourite video game, but it is certainly one that I think of often. I even beat the game on hard twice because my achievements didn't pop, and I almost collected every trophy twice doing that just for the levels.
The Comic Board
Pro Bot
Pro Bot
What about you?
Megatron
I actually platined Arkham Asylum (means that I obtained all the trophies, which are playstation's achivements), I also obtained all the riddler's trophies and completed the agame story in under 18 hours. Anyway respect to you, for being an Xbob Player. Anyway answering you, my 2 (yes there are 2) favorite games are Batman: Arkham City, and Metal Gear Solid 3: Snake Eater.
Megatron
Hey, I'm interested in your earth-7642 timeline. Could you send what you uncover so far?