Help with coin tossing for game (8)
I believe the answer is:
pinochle
'for game' is the definition.
(pinochle is a kind of game)
'help with coin tossing' is the wordplay.
'with' means one lot of letters go next to another.
'tossing' is an anagram indicator.
'help' put after 'coin' is 'coinhelp'.
'coinhelp' anagrammed gives 'PINOCHLE'.
(Other definitions for pinochle that I've seen before include "American card game" , "Lone chip for any of a family of card games" , "Lone chip used in this card game" .)