Reject try in game (5)
I believe the answer is:
bingo
'game' is the definition.
(bingo is a game)
'reject try' is the wordplay.
'reject' becomes 'bin' (I've seen this in other clues).
'try' becomes 'go' (both can mean an attempt).
'bin'+'go'='BINGO'
'in' acts as a link.
(Other definitions for bingo that I've seen before include "I've completed my card!" , "Lotto" , "Housey-housey" , "Voila!" , "House!" .)