Yet Bejeweled is in a way more difficult, as you can't reorganize the board: someone who's really good at Tetris Attack takes time to become good at Bejeweled, because you can't "build" structure... you have to legitimately find it, and then plan ahead to avoid accidentally destroying that structure. The tradeoff with Tetris Attack is that you can only move items horizontally: if you could move items vertically (as you can in Bejeweled) and also leave them in position (as you can in Tetris Attack) the game would no longer have any strategy left.