How To Rotate Your O-Piece

Introduction

To a casual Tetris player, rotating the O-piece appears to be completely useless. It's the only piece which does not move when you rotate it, and its identical rotation states typically prevent it from interacting with walls or other pieces. But what if there were actually ways to use these seemingly useless rotations to your advantage? As it turns out, many Tetris games and stackers based on the series do actually implement game mechanics which make it useful to rotate the O-piece.

My name is Dunspixel (she/they). I love playing a variety of stacker games and learning about the mechanical differences between each one. I also have a very strong opinion about O-piece rotations and way too much free time, so I decided to make this guide describing every known use for rotating the O-piece in these games.

Rotating the O-piece may be nothing more than a meme to some, but many of the techniques in this guide really are practical and some can be utilised at all skill levels. However, I'm still going to include a variety of useless and whimsical techniques too, simply because they're fun. Useful or otherwise, I hope I can help you appreciate O-piece rotations for what they can really do.

Please note that some sections in this guide are still a work in progress.