Nicely made game, and a very simple idea. However, it will drive you insane by constantly blocking progress. Once you've placed your blocks, it gives you 3 more. You have no clue which 3 are coming next, so you can only try and build patterns for what you hope will come out. At this point, the game will always give you the worst possible options, which seems to be by design. How can it give me 3 blocks, 2 of which are shaded because they can't fit anywhere, and the 3rd doesn't clear anything?!