Game cubes? (4)
I believe the answer is:
dice
This clue is a double definition.
'game' is the first definition.
'cubes?' is the second definition.
(I have seen 'Small cubes ' mean 'dice' so perhaps 'cubes' could also mean 'dice')
(Other definitions for dice that I've seen before include "Cut into small cubes" , "Take a risk" , "Gambling items" , "Cubes used in gambling" , "Gaming cube(s)" .)