To mark Ratchet and Clank: A Crack In Time's North American release, Insomniac Games will be releasing two demos. The first will arrive on Thursday, October 22nd.

The demo coming tomorrow allows you to play Clank. During his trip through the Great Clock, you'll learn a bit about his background and get used to his new time manipulator powers. The only thing we know about the second demo is that it will let you play as the game's other playable character, Ratchet.

Crack in Time hits stores on October 27th. Presumably the second demo will be released through PSN on next Thursday.