The concept is really cool, although it's a bit frustrating to click on the items sometimes, I wish there was a bigger margin to click on.
I read that you guys had issues art-wise, but I think you could make it part of the game's charm! I mean, simple, colored shapes fit really well with the msPaint vibe you wanted to have ^^
If you continue developing it a bit more, you guys could have a really cute puzzle game!