Tesla Cannon (Fallout 3)

The Tesla Cannon is a weapon which will be added to Fallout 3 with the release of the Broken Steel downloadable content pack in May 2009. The quest line of Broken Steel includes having to find the parts for this weapon in order to help the Brotherhood of Steel build it.

Characteristics
The Tesla Cannon fires extremely powerful blasts of electricity, apparently capable of knocking aircraft out of the sky with one shot, balanced by a long reload time. It is likened to Quake's railgun, vaporizing enemies in a puff of smoke on contact. Judging by pictures of it, it seems it will use ECPs.