Stack the tiles to form sets! If things go wrong, devour with a dragon! Score points to see pretty women!
I'm still playing this the day after.. and I got 340 points! Beat that!
Maybe I'll post rules for the scoring sometime, although not knowing is part of the point.
This is the image I got the tiles from. It might help to at least know what the sets are (especially 1 of bamboo).
My best score is only around 150 or so but I played for over 10 minutes trying to improve and figure out the rules.