Crossing line, a bear raised game (6)
I believe the answer is:
hoopla
'game' is the definition.
(traditional game)
'crossing line a bear raised' is the wordplay.
'crossing' is an insertion indicator (to cross can mean to go over or around).
'line' becomes 'l' (used when specifying particular lines from a poem).
'bear' becomes 'pooh' (Winnie the Pooh).
'raised' says the letters should be written in reverse (going up in a down clue).
'a'+'pooh'='apooh'
'apooh' reversed gives 'hoopa'.
'l' put inside 'hoopa' is 'HOOPLA'.
(Other definitions for hoopla that I've seen before include "fuss" , "Fair game" , "Fairground game; great excitement" , "game in which all-round achievement is rewarded" , "Throwing game where prizes aimed for" .)