by a humanoid race known as the "Tyhrranoids", led by the game's main antagonist, Dr. Nefarious, a robotic madman determined to destroy all biological life in the galaxy. The game sees the return of protagonists Ratchet and Clank alongside new allies including Sasha Phyronix, captain of the Starship Phoenix, a locale which serves as a hub area for the player. Captain Qwark makes a reappearance and is a playable character in "Vid Comics" found throughout the single-player campaign. The third installment of the series retains the experience and upgrade mechanics of the previous game, with weapons becoming increasingly devastating with increased use. Combat and platforming mechanics are also relatively unchanged as is the weapon purchase system, with bolts remaining as the primary currency throughout. The game retains the series' signature weapons dealer, "Gadgetron". The game introduces a multiplayer mode, featuring 4-player split-screen play with online play supporting up to 8 players, with staple match types such as Deathmatch or Capture The Flag. Space battles and race mini-games of the previous games are not present in Up Your Arsenal, same for the grindboots and grindrails. Ratchet: Deadlocked Ratchet: Deadlocked (also known as Ratchet: Gladiator in Europe, Australia and Africa and Ratchet & Clank 4 in Japan) was released on October 25, 2005, in North America for the PlayStation 2. Deadlocked deviates from the previous installments of the series by reducing the platforming and puzzle elements, and focusing on the combat aspects with a predominantly arena-combat-oriented setting. In Deadlocked, Ratchet, Clank and Al are captured by the media mogul Gleeman Vox and transported to a lawless region of the Solana galaxy known as the Shadow Sector. Ratchet is forced to compete in an intense, underground bloodsport called DreadZone to ensure his, Clank's and Al's survival. For the first time in the series, Clank does not accompany Ratchet during the entirety of the single-player campaign, nor is he given playable sequences. While multiplayer is retained, an additional option to engage the game's single-player campaign as two-player co-op has been introduced, although it bears no effect on the outcome of the plot. Though Deadlocked was not included in the retail high-definition collection of the original trilogy for PlayStation 3, a high-definition version of the game was released as a downloadable title on the PlayStation Network on May 21, 2013, in North America, and on September 5, 2013, in Europe. Future Saga Tools of Destruction