Found in the game files under Lucky Star! Some might find this interesting.
Just some of the images, no sig different ones.
"Playing Lucky Star costs 100 000 Cash each time. If the points are greater than the last time, you can get the higher reward.";
"50% of the Cash players use to play Lucky Star will be put into the Jackpot, the upper limit of Jackpot is 2 billion."
There appears to be four levels of winning - Grand, First, Second, Consolation (80%, 15%, 5% and 50k Cash respectively). I couldn't locate where they would insert this however, but yes, very interesting.
*all images copyright Hui Liu, Biz Tycoon HD