Took me a while to rate this one, because uuuuuh I wasn't progressing much and wanted to see more levels before rating, ahah.
Anyway, the core game is already pretty cool. The way you have to move elements to complete the math puzzles is nice. Also, great pun on Summit... Sum-it.
And the fact you can move the tutorial / menu text is awesome, and adds some humor to the puzzles.
Great job anyway, it's a great entry to the Jam!
Also, the limitation switch is a great idea.