Concept Art
Various pieces of concept art are scattered throughout each level. Concept art is another name for "rough drafts." Rough draft sketches of characters, enemies, weapons, level maps and more were all created early in the game process. Some of the concept art made the final product, and some did not. This is the only way to see what the eliminated pieces of art looked like.
Video
Each hidden production video shows a behind-the-scenes view of the creation process. Some videos contain artist and producer commentary, while others have cast and crew interviews. Behind-the-scenes videos of the production of "Wanted" the movie are also available.
Photos and Posters
Still photographs of cast and crew members, the Warner Bros. Entertainment offices, movie set shenanigans and more are included in the collectibles. Some photographs show the offices of the producers, while others contain images of office parties and "personal" moments. Movie posters, some of which were never released, are also available as hidden objects.
Team Quotes
Some of the collectibles have little or nothing to do with the actual game. Team quotes, for example, are nothing more than a picture of various crew members with text containing a random one-liner spoken by that person. Some are funny, some are wise, and some are downright pointless. For instance, the quote from lead animator Jon Hodges is, "Every time you speak, you create more animations."