Roulette Exploit
a player can bet the same amount of chips on even and odd, 1-18 and 19-36, and 1st,2nd 3rd. this means the player maximum loss is the rake, i.e., on a 100 chip bet on even and a simultaneous 100 chip bet on odd, the player losses 2 chips. i believe the player could still win the roulette jackpot as the placed bet is 100 chips, but the player actually only risked 2 chips.

Thanks, this issue will be fixed in b201.
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VirtualJohn commented
I also just won 63k JP while betting solely on black or red, I don't even think I'd won any recent spins when the message came up either, I'd just lost 3 or 4 bets on the trott.
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lexy commented
it is official just finished beta testing and won the roulette jackpot betting 100 on and same turn betting 100 on odd; so actual cost was just the rake on 200 chips.