Hehe,
It's nice to see you guys are having fun on the game.

Anyways, everything seems to be working as intended and there is no bug with the contract.
The only transaction that failed was when a player tried to reveal his hand without a secret.
Just one quick question regarding the parameters :

Are you guys happy with the current settings ?

Is 0.5 ETH as gamble value appropriate for you or would you prefer to play only for 0.1 ETH for instance ?
What about the delay to reveal your hand ? Is 1h long enough, would you like more ?