Game of chance after bishop gets hopelessly drunk (6)
I believe the answer is:
blotto
'hopelessly drunk' is the definition.
'game of chance after bishop' is the wordplay.
'game of chance' becomes 'lotto' (I've seen this before).
'after' says to put letters next to each other.
'bishop' becomes 'b' (abbreviation used in chess).
'lotto' put after 'b' is 'BLOTTO'.
'gets' is the link.
(Other definitions for blotto that I've seen before include "Smashed" , "More than happy" , "Slangily drunk - ready to bolt" , "As one plastered" , "To bolt away slangily drunk" .)