Three minor gripes:
1) I would like the final score displayed on the "Game Over" page.
2) The burst effect on matching lasts a bit too long. It's hard to see new pairs formed by falling treasures.
3) [REALLY minor] The dollar signs look out of place. They are the only non-metallic items and also the only moving ones. Maybe they should be gold or at least metallic.
These must be the world's neediest kids. "Help me! I need to walk two feet from the jungle gym to the orange ball! Now take me three feet to the see-saw!" I think there needs to be a psychologist upgrade to help deal with the trauma and deprivation they must have suffered.
Also, if you click the "?" icon during the game, the instructions cover the game field and there's no way to make them go away. You can click the word START but nothing happens. Blocks behind START are unreachable.
not really use your arrow key xD