Almost didn't play death mode since last year carnival when I broke the Gm thanks to two advices I'm going to share with you. For me, there is TWO major mistakes that will make the difference. Those two mistakes, you must not do if you want to increase your chances to become a master and a Grand master. Well, at least it worked for me It isn't about stacking, tetrising, double tapping, trying difficult moves or so on. It's all about psychology and the state of mind you need to enter before playing. 1: Do not think about what you are doing. NEVER. Your hands are playing tetris, your subconscious is playing tetris but you, you my dear fellow, you are doing nothing. You are just watching at the screen with a totally empty mind and only focusing on one thing: do not start thinking about what your hands are doing. I broke Gm because I managed once to empty totally my mind (which was the hardest part for me because I always had big problem focusing fully on anything) 2 comes from 1: do not change your mind on a single tetromino placement. Never Ever. Your hands placed a tetromino in an absurd way ? You want to change it's place by retaking control of what's going on on the screen and not letting your subconscious decide for you ? This will end in three or four misdrops in a raw. And of course, the faster the game is getting, the harder it will be for you to change your mind. I can change my mind while playing until level 399 without having too much risk to misstack completely. But I never do so because I realised that I get better scores if I don't. That's it. Keep on stackin !