Crack a game (4)
I believe the answer is:
snap
I believe this is a double definition.
'crack' is the first definition.
(I know that crack can be written as snap)
'a game' is the second definition.
(card game)
(Other definitions for snap that I've seen before include "Still" , "Crack; bite" , "Quick photograph - impression" , "Photograph - without warning" , "Snarl at - photograph" .)