Reality bomb

The reality bomb about to be activated.

THIS is my ultimate victory Doctor. The destruction of reality itself!Davros

The Reality bomb was a superweapon created by Davros.

Overview

The weapon made use of the stolen 27 planets transported to the Medusa Cascade captured by the New Dalek Empire along with the unique z-neutrino-based energy source of the Crucible. This bomb cancels out the electrical field holding atoms together and is capable of wiping the entire universe and all of creation, except for those within or near the Crucible. The reality bomb was planned to destroy all other forms of life except for that of the Daleks, to make them become the only race in the universe..

The Doctor, and his companions, were successful in preventing the use of the weapon. (DW: Journey's End)

The manner in which Davros described the weapon's function suggests that, ordinarily, the weapon would have destroyed the mainstream universe, but when used in conjunction with the space-time rift at the very heart of the Medusa Cascade, it was capable of destroying every reality across the multi-verse.