Created by Insomniac Games.
Sequals named Ratchet & Clank: Going Commando (or Ratchet & Clank: Locked and Loaded or just Ratchet & Clank 2) and Ratchet & Clank: Up Your Arsenal.
Often abreviated to R&C.
The series was started by a company called 'Insomniac' but in 2007 a game called Ratchet and Clank: Size Matters was developed for the Playstation Portable (PSP) by a company called High Impact Games.
Ratchet and Clank is a third person action adventure shooting platformer.