I have seen a bunch of these games before, I am cool with them but I think I should just make a quick comment regarding this part:

@steemdoubler is using the blockchain transparency for this game. You can verify all the deposits, payments and game status in our wallet.

Blockchain tech allows everyone to see the balance of the account but since this is not an app coded on the blockchain people still have to trust you on making the payments manually...

If there are 5,000 Steem on the account and you get hit by a car, then there is no way people can get the money out...

PS. I hope you dont get hit by a car, it was just for clarification purposes.