Combine fixing a game with Malta (10)
I believe the answer is:
amalgamate
'combine' is the definition.
(thesaurus)
'fixing a game with malta' is the wordplay.
'fixing' is an anagram indicator.
'with' is a charade indicator (letters next to each other).
'a'+'game'='agame'
'agame' after 'malta' is 'maltaagame'.
'maltaagame' with letters rearranged gives 'AMALGAMATE'.
(Other definitions for amalgamate that I've seen before include "Join" , "Combine into one" , "get together" , "Mix" , "Compound" .)