Game to go a long way for love (4)
I believe the answer is:
faro
'game' is the definition.
(faro is a kind of game)
'to go a long way for love' is the wordplay.
'to' becomes 'for'.
'go' is a deletion indicator.
'a long way' becomes 'far' (I've seen this in another clue).
'love' becomes 'o' (love means zero in tennis).
'far'+'for'+'o'='farforo'
'farforo' with 'for' removed is 'FARO'.
(Other definitions for faro that I've seen before include "Portuguese city" , "European port" , "Portuguese seaport" , "Card game - Portuguese resort" , "Algarve seaport" .)