Can really be dangerous

The game is great from the idea. We really laughed tears, the time pressure of the ticking bomb often generates creativity funny or funny dropouts.
The problem: our ten years of daughters is often so excited that is the bomb when it explodes in your hand further raises fast and hard. Your teammates - Mom, Dad and Grandpa got on the first day the bomb also the face. Due to the hardness, there were always minor injuries such as laceration of the face of the mummy.

Suggestion: a soft bomb manufacture, so it does not at the end of the game are still crying children in the future.