Mob around Michigan playing roulette perhaps (6)
I believe the answer is:
gaming
'roulette perhaps' is the definition.
(roulette is a kind of gaming)
'mob around michigan' is the wordplay.
'mob' becomes 'gang' (synonyms).
'around' means one lot of letters goes inside another.
'michigan' becomes 'mi' (state letters).
'gang' placed around 'mi' is 'GAMING'.
'playing' acts as a link.
This may not be right. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for gaming that I've seen before include "Gambling" , "Competitive playing for money" , "Playing on computer" , "Playing the tables?" .)