That\u2019s not to say you should avoid trying to clear four lines at a time to score a Tetris, because it will impact your adversary\u2019s board if you do. It\u2019s just that this isn\u2019t the only way to do things, so don\u2019t fret, or don\u2019t force yourself to focus on just that. The crystals are probably more important, especially since your board could be rearranged one way or another at any time, in a way that undoes any structural planning you had going on. You\u2019re going to have a bad time if you\u2019re pinning all your hopes on scoring a Tetris or two, and then your opponent uses a power that turns your board into Swiss cheese: problems like that are going to take time to fix, and if you\u2019re stacking blocks up too high before tragedy strikes, you might not have the time to make the repairs you need to before you lose.