Looks like fun. Something about the composition bothers me, but I can't put my finger on what it is. Possibly that the top of the tower is only partially visible. Maybe more or not at all would be better. I'd like dare #34 to be right side up, as well. Getting the light source up higher sould have made more natural looking shadows, and lit the tops of the pieces better. Good candidate for B/W.
If I follow the instructions on the two peices facing up I can't see your picture anymore because 1. I get really dizzy, and 2. that kinda leads me away fromt the computer. The texture of the wooden table is a little bit too distracting for this picture though.
Crisp focus on the subject, good use of backgound. The top of the picture seems a little too light and the bottom to dark. But perhaps you planned it that way.
Nice shot, I like the various color wood blocks on the wood surface. I knew of the standard Jenga but not the dare. Sounds like a great party version of the game.