Great excitement in fairground game (6)
I believe the answer is:
hoopla
I believe this clue is a double definition.
'great excitement' is the first definition.
(I've seen this before)
'fairground game' is the second definition.
(I've seen this before)
'in' acts as a link.
(Other definitions for hoopla that I've seen before include "game in which all-round achievement is rewarded" , "Fairground game; great excitement" , "fair prize at this" , "needless commotion" , "Game in which rings are thrown over objects in order to win them" .)