Hop on foot in game (8)
I believe the answer is:
baseball
'game' is the definition.
(baseball is a kind of game)
'hop on foot' is the wordplay.
'hop' becomes 'ball' (both can mean an event with dancing).
'on' is a charade indicator (letters next to each other).
'foot' becomes 'base' ('base' can be a synonym of 'foot').
'ball' after 'base' is 'BASEBALL'.
'in' is the link.
(Other definitions for baseball that I've seen before include "American team gave" , "US/Canadian game" , "Summer sport of US" , "SPORT/GAME" , "Game played in sable alb?" .)