Is game to make pictures (6)
I believe the answer is:
images
'pictures' is the definition.
('image' can be a synonym of 'picture')
'is game to make' is the wordplay.
'to make' is an anagram indicator.
'is'+'game'='isgame'
'isgame' is an anagram of 'IMAGES'.
(Other definitions for images that I've seen before include "Semblances" , "Pictures; metaphors" , "Mental representations or figures" , "Reflections in a mirror" , "These doubles could be spitting" .)