The Borderlands 2 Game of the Year Edition includes an awesome assemblage of extras for aspiring Vault Hunters out there. Here's a list of the items contained within this monster compilation, and what is sold separately:

THE BORDERLANDS 2 GAME OF THE YEAR EDITION INCLUDES:

Borderlands 2 (a video game)

Captain Scarlett and Her Pirate's Booty (campaign add-on)

Mr. Torgue's Campaign of Carnage (campaign add-on)

Sir Hammerlock's Big Game Hunt (campaign add-on)

Tiny Tina's Assault on Dragon Keep (campaign add-on)

The Ultimate Vault Hunter Upgrade Pack (level cap increase)

Gaige the Mechromancer (playable class)

Krieg the Psycho (playable class)

Creature Slaughter Dome (battle arena)

Collector's Edition Pack (extra heads and skins for Axton, Maya, Zer0, and Salvador; bonus weapon)