Game; happening (5)
I believe the answer is:
event
I believe this clue is a double definition.
'game' is the first definition.
(thesaurus)
'happening' is the second definition.
(I've seen this before)
(Other definitions for event that I've seen before include "A thing taking place" , "Something that happens - part of a programme?" , "special occasion" , "Planned public or social occasion" , "match" .)