A variation on traditional Jenga
Each piece individually bandsawed, and sanded
The complicated rules:
No player can pull out a piece from a layer such that the difference between said layer and its adjacent layers are greater than 1. Whew! Who would've thought you need math for Jenga?
For example, if layer one has 3 pieces, layer two has 2 pieces and layer three has 3 pieces, the difference in pieces between layers three and two is greater than 1. Layer one and layer three are layer two's adjacent.