Scheduled for release 28/08/09 Batman Collectors edition contents are revealed. It looks big and full of cool collectables including a 14″ Batarang! (I wonder if it works! 
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There have been a few hints that the game may miss it’s release date, but these have not been confirmed by Eidos.
The Collector’s Edition of Batman: Arkham Asylum, features a full array of iconic collector’s items, including:
• 14″ Batarang with stand
- Matches the Batarang’s in-game design
• Arkham Doctor’s Journal
- 48 pages of notes on Arkham’s inmates
• 2 Sleeve Digi-pack, including:
- Game disc
- Behind-the-scenes DVD
• Code for downloadable Challenge Map
- Exclusive “Crime Alley” map, available immediately
• Full-color Manual
X Box 360 and the creators of batman are just a bunch of hustlers you got everybody for there money the collectors edition is not worth the money.