I love Tetris, and I guess battle royale is fine, but combining these two doesn't really work in my opinion. You're so wrapped up in focusing on clearing lines and playing a normal game of Tetris, but the CPU essentially decides who gets trash and who doesn't, and it's heavily dependent on RNG which is an inherently flawed mechanic. It doesn't matter how well you do or how efficient you are at clearing lines, the game will decide who wins in the end. It's kind of unfair but I guess it just forces you to work that much harder to get #1 (even though it doesn't matter, you'll lose a ton). This game really embraces the notion that "losing is fun"! Better get used to it.