I don't think spin is fixed. They offer tickets so that you may remain active at their site. Sometimes you don't get any ticket for couple of days but next day they may reward you with two tickets at a time or a big tournament ticket.
The wheel isn't rigged if that's what you mean.The wheel is just not a wheel like it looks with 8 parts but more a wheel with 1000 parts and probably more.
There are 7 prize parts and 1 zero. With a wheel of 8 parts you would have 87,5 % chance of winning a prize and 12,5 % to land on zero.
With the 888 wheel the biggest prize is only 1 part of 1000 , the second best has 2 and the next maybe 3 maybe even some more.
In the wheel previous to this one I won practically every day with the wheel. Most of the time is was the cheapest prize , that was then a ticket to a $ 1500 tournament that ran twice a day. I think I have won every prize on that wheel at least once , so also the biggest prize of $33,00 big fish ticket and a few times a 5,5 big fish ticket. With that wheel I seldom landed on zero , maybe 1 in 50 times.
With the present wheel , the snowball spinner , that suddenly has changed. Now I get a prize maybe 1 in 50 times. So it is my opinion that the have changed the
odds for the wheel. I won with the old wheel about 95 % of the time now it is 95 % zero.
My current level is 145 on 888 , so it is not that I hardly play on 888. I have contacted them about it and asked if they had changed the odds for this wheel because of the big change with the previous wheel . But they don't make the odds public.
I can't imagine they changed the odds on purpose because the cheapest prize is a ticket to a tournament with a fixed prizepool.