The GOTY edition integrated all previously released DLC into the base experience. This included:
Playing as the Joker offered a complete departure from Batman’s "no-kill" precision. He utilized a lethal gadget kit , including a snubb-nosed revolver, explosive chattering teeth, and a unique, more erratic combat animation style. Batman Arkham Asylum Game of The Year Edition
Featuring the "Totally Insane" and "Nocturnal Hunter" maps, which pushed players' combat and stealth skills to their limits. The GOTY edition integrated all previously released DLC
It allowed players to experience the game in 3D on any standard High Definition television using bundled magenta/green anaglyph glasses. including a snubb-nosed revolver