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As far as I know, Nobody yet hit the jackpot.
It's maybe because the chances of hitting it are extremely small.
0.01% x 0.01% = 0.0001%
I would suggest to change this rule: "Anything less than 0.0001 is not eligible.", and add the following:
Over 0.00001 BTC 0.1%
Over 0.000001 BTC 0.01%
0.01% of 112 BTC is still a pretty good prize, 0.0112, and the possibility of hitting the Jackpot betting with just 100 sats will add fun to the game, imo.
I agree the chances are very slim and needless to say that the rules won't probably be relaxed since otherwise it would put Primedice at the risk of losing more than gaining.