The Gravity Bomb is a weapon manufactured by MegaCorp in Going Commando and Up Your Arsenal multiplayer. It is a medium-range grenade launcher which launches powerful bombs with a high blast radius. Though it is a powerful weapon, its ammunition is limited.

The Gravity Bomb can be upgraded to the Mini-Nuke, which launches low-powered nuclear explosives which set off a mushroom cloud explosion. In Going Commando, the Mini-Nuke in turn can be upgraded to the Mega Mini-Nuke and the Ultra Mini-Nuke in challenge mode.


Going Commando

The Gravity Bomb was available as one of two default MegaCorp Commando weapons, along with the Lancer. It could be upgraded to the Mini-Nuke with use. In challenge mode, it could later be upgraded to the Mega Mini-Nuke from any MegaCorp vendor for 1,500,000 bolts.

Up Your Arsenal

The Gravity Bomb featured in multiplayer as a pick-up, and can again upgrade to the Mini-Nuke after killing other players. It had a faster rate of fire with a slightly different explosion.


Mininuke cloud

Mini-Nuke mushroom cloud explosion.

Both the Gravity Bomb and Mini-Nuke are long, blue grenade launchers with cooling vents and glowing yellow generator at the back, and two flaps (four as Mini-Nuke) at the end of the nozzle. The generator features tubes leading from it to the launcher of the weapon. Both feature a left-hand grip at the bottom.

The bombs launched have a one-eyed smiling face, and set off a large explosion. As the Mini-Nuke, the explosion set off by the bomb has a mushroom cloud.


The Gravity Bomb is slow to fire and deliver its payload, but when it does it does so with impressive force. Incredibly useful against either powerful or grouped enemies, it can easily take out entire swaths of targets with a single blow. Its upgrade, the Mini-Nuke, simply increases the damage radius and damage dealt. The weapon holds little efficient use against singular or weak enemies, as its limited ammo count and pick-up rate from ammo crates means it is unlikely it can keep up with the enemies later in the game.

As it is a starting weapon, it is inevitably less useful as the game progresses, however the final Mega upgrade is even useful throughout challenge mode, albeit at a hefty cost of 1,500,000 bolts.

The Gravity Bomb also has two optional weapon modifications: the acid mod and the lock-on mod. The former further improves its already impressive damage by adding a damage over time, while the latter provides little effective use due to its already impressive area of effect. The acid mod is a solid modification, as it will apply the effect to all enemies hit in the large blast radius.




  • Commando Guidebook
  • Ratchet & Clank: Going Commando Official Strategy Guide‏
  • Ratchet & Clank: Up Your Arsenal Official Strategy Guide‏‎ (mentioned only)(multiplayer only)

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