Tredoku - the next Sudoku Craze?

Is this te next Sudoku craze?  This is a new fun site with free down-loadable spatial versions of Sudoku - Tredoku.  It has the same Sudoku rules but many more shapes and challenges my math ability and ALSO my ability to "see around corners."  Solvig these puzzles is simply more exciting (and frustrating!)  I am sure sudoku fans will enjoy this variation and get away from "the same old stuff"