maybe like a sign up ? some game instead of a roulette have a sign up calendar, were you get set prize for login x time in a row every week / month.
If it's that, then i'm guessing he want a reliable way to get 15 soul, given the roulette is all about luck.
About the patience, same for me, i like it this way ... even thought i spend soo much soul xD
Usually, the day you have everything, is the day you leave or get bored and more bored with each passing day till you end leaving. Which is why easy and fast game may attract more player but they only last this long ...