Is it me, or was this game seriously underrated when it was released? The concept and implementation was pure genius, in my opinion. I am slowly working my way through but am currently stuck on about level 65 (I think).
I would love to have seen a sequel with some new dominos. Like a "switch" domino - a red, green or blue domino which would open a door of corresponding colour and allow other dominos to pass through. Or a teleport domino which when touched by another domino, would disappear and reappear in a predefined location and then topple.
But for now, I'm having fun with this game :-)