Flyers did what they do, endless game of chance (6)
I believe the answer is:
'game of chance' is the definition.
(raffle is a kind of game of chance)
'flyers did what they do endless' is the wordplay.
I cannot really understand how this works, but
'flyers' could be 'raf' (Royal Air Force) and 'raf' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for raffle that I've seen before include "Lottery with bought tickets" , "Form of lottery" , "Sweepstake" , "Prize draw" , "Lotto" .)