I've played and played and still get a challenge out of it. It's the best Mahjong game I've ever played.

With this game you have to play a little at a time because of the concentration.. It's a different kind of Mahjong and you really can get frustrated with this game. It's very challenging that's for sure bur the graphics is excellent and I enjoyed the music. If you want a challenge try this game.

There is no off switch for the tiles moving across the conveyor belt...that is NOT relaxing for me. Too much back and forth trying to match the tiles off the conveyor belt.

I was frustrated for a while after I bought this game because I was stuck on level 5, but eventually got through. It progresses from fairly mindless to needing real concentration, and you can always choose your difficulty level by having 2 or 3 profiles in progress at the same time. Always a favourite with me!