text: In this installment, new and recurring weapons and gadgets are introduced, and the skill points and weapon upgrading systems make their return. The armor system has been altered compared to previous games; there are seven types of armor available, all of which are found in different pieces (helmet, body, gloves and boots) on different planets. Once a complete set of armor is found and equipped, it can enhance specific player abilities.
  Secret Agent Clank
  Announced at the 2007 Tokyo Game Show, Secret Agent Clank was developed by High Impact Games, who developed Size Matters. It is available for the PlayStation Portable and was released on June 17, 2008. This game was released for the PlayStation 2 on May 26, 2009.
  The game focuses on Clank as the playable character, due to Ratchet being wrongfully imprisoned, emphasizing the "Secret Agent Clank" persona suggested in previous games. Gameplay features the series' standard focus on using gadgets and engaging enemies in combat, but also introduces sequences requiring stealth.
  All 4 One
  An Insomniac Games production that was revealed at Gamescom 2010 on August 17, 2010. The game has online multiplayer and 4-player co-op featuring the use of drop-in/drop-out, offline/online gameplay. The game mainly focuses on this cooperative play. Teammates can work together, even using weapons between players. Players can take control of Ratchet, Clank, Captain Qwark and Dr. Nefarious. It was released on October 18, 2011.