Equal to a game (5)
I believe the answer is:
match
I believe this clue is a double definition.
'equal' is the first definition.
(I know that equal can be written as match)
'game' is the second definition.
(eg a football match)
'to a' is the link.
(Other definitions for match that I've seen before include "Equivalent" , "of little use when floodlights fail?" , "Suit; fixture" , "Lighter; contest" , "You can have a love or shouting one" .)