For example, I pledged 100$ (plus shipping) for Double Fine Adventure, and that is:
• Special edition box containing both the game disc and a DVD or Blu-Ray of the documentary,
• Double Fine Adventure Backer T-shirt,
• original "Double Fine Adventure" poster (suitable for framing),
• special thanks in the game’s credits
• PDF version of the Double Fine Adventure Book (filled with 100+ full color pages of concept art, original photos, developer bios, excerpts from the game’s script, deep dark secrets, and more!)