One word...Awesome
This has got to be one of the BEST puzzle games I've ever played. I would love to play this with a controller. It's so simple, yet so great, and VERY frustrating.
It's really a shame that the puzzle game market really declined after the SNES, you should really see if you could get this published.
Don't listen to those complaining about the controls, they are perferct.
I only hope that one day, I can create a game even close to the quality of this one.