Fusion Grenade

"Nothing ruins an enemy's day like a thermonuclear hand grenade."

- Slogan on GrummelNet weapon vendor description.

The Fusion Grenade was a Gadgetron weapon in Ratchet & Clank Future: Tools of Destruction and Ratchet & Clank: Quest for Booty that allowed the user to lob very powerful thermonuclear grenades at enemies. The grenades did not explode on contact, but exploded one second after being thrown, similar to the Timed Trigger Constructo Mod from A Crack In Time. The blast radius, even without upgrades, was massive and could easily deal with any early on enemies.

Ratchet & Clank Future: Tools of Destruction
Ratchet started the game with the Fusion Grenade in his arsenal, along with his Combuster. Each grenade dealt 150 damage without Raritanium upgrades, making it the most powerful weapon early on. However, like all of the weapons Ratchet started with in previous games, it eventually became obsolete in power. The Fusion Grenade upgraded into the Fusion Bomb at V5, which added GrummelNet's patented "Intelli-Seeking Pyrocidic Nitroballs" to each grenade. They scattered from each Fusion Grenade blast like the Bouncer's bomblets in Going Commando. The special Raritanium upgrade for this weapon was Concussion Detonators, which would knock down enemies that were not killed in each blast.

Damage
Weapon damage without Raritanium upgrades:
 * V1: 150
 * V2: 173
 * V3: 198
 * V4: 228
 * V5: 262

Raritanium Upgrades

 * More Ammo x2: costs 100 Raritanium each, adds 1 grenade to ammmo capacity
 * More Bolts x2: costs 250 Raritanium each
 * More Damage x3: costs 200 Raritanium each, adds 5%
 * Bigger Area x2: costs 400 Raritanium each
 * Special Upgrade: Concussion Detonators, knocks down enemies not killed in the blast, costs 300 Raritanium

Ratchet & Clank: Quest for Booty
Ratchet started the game with the Fusion Grenade, but it was lost in the Azorean Sea shortly after when Rusty Pete shot Ratchet and Talwyn to Hoolefar Island. Rusty Pete later returned the Fusion Grenade along with the Combuster to Ratchet after Rusty Pete resurrected Slag and Darkwater in Morrow Caverns. It started at V3 and upgraded into the Fusion Bomb at V5. Surprisingly, the Fusion Bomb in Quest for Booty lacked the bomblets that the Fusion Bomb had in Tools of Destruction.

Concussion Detonators Location
The Concussion Detonators upgrade could be found in the underwater tunnel in the bay of Hoolefar Island. To get it, dive into the bay and enter the underwater tunnel, avoiding the mines. Jump out of the water, and smash the crates in front of you. Blow down the gate with a Fusion Grenade, and behind it is the Concussion Detonators upgrade.

Damage

 * V3: 154
 * V4: 180
 * V5: 216

Appearances

 * Ratchet & Clank Future: Tools of Destruction
 * Ratchet & Clank: Quest for Booty