Turn game off, creating dispute (8)
I believe the answer is:
argument
'dispute' is the definition.
(I know that argument is a type of dispute)
'turn game off' is the wordplay.
'off' is an anagram indicator.
'turn'+'game'='turngame'
'turngame' with letters rearranged gives 'ARGUMENT'.
'creating' acts as a link.
(Other definitions for argument that I've seen before include "Opposed points of view" , "Verbal dispute" , "Debate - disagreement" , "Barney" , "Heated exchange" .)