I whink I may call myself the worst Jenga player ever....
The game is nice, although it has some bugs as you already said,
as I could stil move blocks when the tower already collapsed.
Instead of applying the flat material, you could also bevel the edges of your blocks, which looks even better.
most modelling applications have this feature.
I didn't get the submit button to work.
I clicked it, and it did nothing.... except changing it's bitmap.