The wheel is on a repeating set algorithm that drops a specific item ever set number of spins. for example, every 1k spins it drops 1k cents, ever 500 spins it drops 5 on wars, ever 3 spins it drops res etc...This algorithm then resets every day at maintenance. Even though it seems unfair...it is actually completely random with no bias towards anyone, except those who spin way more often, but that just increases your odds.