“Twin packs” have become more common this generation with Wizardy Twin Pack for PS3 (a bundle of the two PSN Wizardry games), Resident Evil: The Darkside Chronicles being released on one with Resident Evil 5, and PSP visual novel compilations. Warner Bros. is taking a stab at the Japanese market with this budget re-release. Both games are 3,990 yen ($40).
What’s interesting is the Batman: Arkham Twin Pack has only been announced for Xbox 360 and so far it’s only for Japan. The game also includes a DLC code for the Arkham City Skin Pack plus Xbox avatar items to dress your avatar like Batman or Catwoman.