The Rumbleblaster is a Robotics Ranged device that fires a sphere of energy which travels in a line. The sphere will bounce off surfaces until either it hits a hostile entity or enough time passes.
The Rumbleblaster does significant AoE damage with a fair rate of fire and accuracy, however it is very Power hungry. It is useful for destroying large groups of Minion-class Androids as well as dealing moderate damage to enemy formations in PvP. The sphere's explosion also does a small amount of Knockback - it is possible to push enemy Agents off of ledges and seperate Medic/Assault teams. It is recommended that a Robotics Agent that wishes to use the Rumbleblaster also bring the NanoForge Power Station to mitigate the high Power cost.
A specific epic varient of the Rumbleblaster can be purchased at Dome City's Robotics Gear Vendor for 6000 Mercenary Tokens. Uncommong, rare, and other epic varients are occasionally awarded for completion of PvE and PvP missions. An agent must be level 29 before equiping this device.
The energy sphere fired by the rumbleblaster accelerates each time the sphere bounces off a surface, as well as extends the time until the ball automatically explodes, and resets the effective range the ball can travel before detonation. (I'm working on getting specific numbers) The ball will auto-detonate if: it bounces too many times within a set time, it reaches the listed effective range of the weapon without bouncing off a surface