I have a version of Tetris called Tetris Crystal. I did a search, but can't find any info about it. There is a part called puzzle, in which you are given pieces you need to put into the puzzle in order to clear all lines. All of the people I know have tried to get this one, but haven't been able to. Anyone able to help me out? There is a feature called hold which allows a piece to be held until you want to use it.