Happen to see game (5)
I believe the answer is:
catch
This clue is a double definition.
'happen to see' is the first definition.
'game' is the second definition.
(thesaurus)
(Other definitions for catch that I've seen before include "Grab; trick; fastener" , "Grasp - overtake - overhear - surprise" , "problem being concealed" , "Ensnare" , "It's taken by a fielder to dismiss a player in baseball and cricket" .)