In terms of “games” you can play with another individual, the little games where you end up taking turns striking each other are perhaps the dumbest games you can play. In these little matches that involves blows to the face or head, brain damage can easily result.
The most common of these seems to be a slapping match. The secret to winning these is quite simple. To reduce the damage from a strike, you should turn your head away from the strike as it comes to reduce the impact. At the same time, you should also tuck your chin. Winning these involves knowing how to put your weight behind your strikes and also striking the vulnerable points of the head.