Each ticket of Winfall cost $1 and a player could pick six numbers between 1 and 49 with one ticket. If the six numbers Michigan Lottery drew were the same six numbers a player picked, the individual would win a jackpot of at least $2 million or higher. If the player guessed five, four, three, or two of the six numbers, lesser prizes were awarded.

If nobody won the jackpot until the prize money reached $5 million, the money will roll down to the lesser prizes in the next draw, only if there wasn’t a jackpot winner in the same. The roll-down system of Winfall made the lesser and more attainable prizes more valuable than in a regular scenario. For example, a three-number combination was awarded $50 instead of $5 and a four-number combination was awarded $1,000 instead of $100. Then enter the game of probability. There was a 1-in-54 chance to pick a three-number combination and a 1-in-1,500 chance to pick a four-number combination.

威力彩是一種樂透型遊戲，其選號分為兩區，您必須從第1個選號區中的01~38 的號碼中任選6個號碼，並從第2個選號區中的01~08的號碼中任選1個號碼進行投注，這六個+一個號碼即為您的投注號碼。開獎時，開獎單位將從第1區01~38的號碼中隨機開出六個號碼，再從第2區01~08的號碼中隨機開出一個號碼，這一組六個+一個號碼，就是該期威力彩的中獎號碼，也稱為「獎號」。您第1區的選號中，如果對中當期第1區開出之任一個獎號，而第2區亦對中當期第2區開出之獎號，即為中獎(普獎)，並可依規定兌領獎金。

頭獎中獎率約1/2,209萬，總中獎率約1/9