Any one knows of a 3D Tetris with the shape of capital letters ?

The O would be a donut not a sphere.

The idea is a bit the same as this old game we play when were kids. Remember we hide our hands in the back a choose to make a pair of scissor, a well, a leaf or a stone. Then we show our hands all in the same time.
Depending on the shape, we win over the others. or instead of winning we can says that a hiearchie is establish...

I'm trying to find the same kind of hierachy with the letters. Because I believe a lot of meaning has been put in their shapes. And even if it was not intentional at first but pratical, the shape of the letters in itself has influenced the words where it appears...