At its core, Tetris hasn’t changed. This is still a game where you stack blocks that will disappear when you create a full row. Eventually, the blocks will get to the top and you’ll lose.
Under the hood, Alexey Pajitnov’s iconic puzzle game has actually received a number of mechanical tweaks that change the game quite a bit. So much so, that one can draw a hard line between “classic” Tetris and “modern” Tetris. If you grew up on the old games and are trying out one of the newer ones for the first time, it’s easy to not see the differences. For new players going backwards, they’re in for a rude awakening when things they took for granted aren’t there anymore.
I’m not an expert when it comes to the inner workings of Tetris, but I thought it would be neat to talk through a handful of the mechanical changes that impact how the game is played.