Pretty good, but needs a little more work
Nice game idea and rules, but there are a few things that could be fixed.
The "Hit at least # tiles" thing didn't really need to be there, you could have just said you have to place all tiles in the first level, and the "go spark" button shouldn't be able to be hit until all tiles were placed on a black box. I'm not sure if you already know this, but the game allows you to place two tiles on a black box at a time. The levels were very easy, including the last few, even though they were meant to be hard (the only hard ones for me were 10,11, and 13).
In conclusion, because there are only 16 levels, it is a good game to play if you want to pass the time or get another medal (YAY! :) ), but if you want it to be really great, in needs some fixing up.