Game moves quickly (5)
I believe the answer is:
darts
This clue is a double definition.
'game' is the first definition.
(darts is a kind of game)
'moves quickly' is the second definition.
(I've seen this before)
(Other definitions for darts that I've seen before include "quick movements" , "Game in which missiles are thrown at target" , "Tears" , "Shoots" , "Game with board and missiles" .)