The maths of the Wheel (probability/odds)

To rephrase for those who have trouble with the percentages, the decorated house/cash slots each have an approximately 1/5 chance of landing on any given spin. Since there are three of these slots, you will get cash (or lights) on about 3/5 of your spins. The other 2/5 of the time you will get gift cards or the prize(s) you are waiting for.

I still need the ice god (approx. 1/50 chance) and Plow King (approx. 1/20 chance). I'm hoping my free coins will get me there without any more donut expense!