Herman is a Howler Monkey. He has super fast fingers and can get great scores on a variety of games.
Why don't you take him up to a challenge? He'll pick a random game to play and try it out. You will have TWO hours to beat his score. If you do, he'll reward you with a Jungle Puzzle Piece. If you don't, you walk away empty handed.
If Herman has picked a game you know you can't beat, you can always SURRENDER to move on to the next game. There is a limit to how often you can challenge Herman to games each day though, so try not to use that SURRENDER button too fast.