I like the style of this game, rotating the blocks can be a bit finicky though. I think you should make a few adjustments to it to polish it up a bit. I think it would also be cool if you had like different towers or shapes you had to place the blocks in, it would add more challenge. I think this would make a nice little mobile game you'd play while on the train or something if it was fleshed out or explored a bit more. Nicely done :)