Ratchet: Eruption, Ratchet 3: Doom in Europe, is a video game in the Ratchet & Clank series. It was created by Insomniac Games and granted permission by Naughty Dog to use the Jak characters within the game. The game begins at Ratchet's last known area.
Ratchet and Clank arive on another planet and Ratchet is targeted by a swarm of Nestiers and later finds out their leaders. This is the practice level of the game. Ratchet is suddenly seperated from his robotic partner as a refference to Clank: Robotic Justice. Ratchet teams up with other partners and is suddenly placed into a battledome to have his fate revealed. Ratchet fights a tremendous battle here like in Ratchet: Deadlocked.