Game plays great and I experienced none of the problems with seeing the tiles. However, the game does have flaws. Most notably the ability to go backwards or take back a move. Without that, you can't figure out what you did wrong and solve the puzzle. You just have to start over. One puzzle I've been working at for over 200 tries!
This is a good little game. The tiles are small but that's easily overcome by zooming into your screen. That way you can fill the whole screen with the game. Size, no longer a problem (macs only).
Now if I could only get a hold of the 4 player mah-jong game, only one is by trimedia but only available for pc's.