Not knowing what shapes come next turns this from a puzzle game into a memory one where you need to play the level a few times to even have a clue how to correctly build the tower.

very good game :)
but i think the idea is made before so it would be better if you added something new :)

This is a very cute and easy game, similar to Super Stacker. I suggest changing the name to something more specific and possibly adding a feature that allows you to see what the next block is though.

Needs to be reformatted to show larger. The picture is itty bitty