Dice2win is currently an extremely popular blockchain betting game on Ethereum. Known as “provable fairness”, Dice2win currently has nearly one thousand (1.5 million RMB) bet per day, the second largest Ethereum betting game after etheroll. However, our analysis found that all games in dice2win have fairness vulnerabilities, and the dealer can use these vulnerabilities to manipulate the game results.

http://blogs.360.cn/post/Fairness_Analysis_of_Dice2win.html