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|"Now it's your chance to become a hero!"|
The Ultra Mini-Nuke was the final upgrade of the Gravity Bomb. It was extremely powerful and killed many enemies with ease. A small mushroom cloud would be created upon impact. This form was available in Challenge Mode, after you beat the game once and only had the Gravity Bomb, upgraded it to the Mini-Nuke and bought the Mega Mini-Nuke in Challenge Mode.
It was one of the most powerful weapons in the game, rivaling the RYNO II in power.
- Ratchet & Clank: Going Commando (first appearance)