One of the most consistent game franchises around would have to be Insomniac's Ratchet & Clank series. Each progressive title has managed to add new elements while maintaining an excellent balance of humor and solid gameplay that define the series. Many fans were a bit disappointed that Ratchet: Deadlocked focused on shooting without platforming and puzzle elements, but Kotaku is happy to say after spending quite a bit of time with a preview build that the series has returned to its roots with the upcoming Ratchet & Clank: Size Matters for the PSP.