Nukeball
From Tardis Wiki, the free Doctor Who reference
Nukeball was a favourite sport among a number of Judoon, but it was outlawed on their home planet so the population was not wiped out. Despite this, it was still played illegally, and often a star system would explode, which signified a Pyrrhic victory. (PROSE: The Coming of the Terraphiles)
Behind the scenes
Its name suggests the use of nuclear weapons.
