About This Website

Welcome to our site!

Here we have some guides and notes on tetris written by us (davdav1233 and cosin307). We try to focus and expand on stuff that we think are relevant and important to know. Pages that are being worked on are marked with 🚧.

Special thanks to knewjade (for his fumen code and his perfect clear finder) and kazu (for his gameplays) who have made this all possible. Inspirations for the design of diagrams used on this site include the solid block style from Jstris, the color scheme from Tetrisch, and the 3D effect from N3TWORK™ Tetris®.

FOUR is a fan-made website and is in no way affiliated with Tetris®. FOUR's content includes gameplay related to modern official guideline Tetris®: openers, techniques, stacking, and more. We reserve all rights to the content available on this site, meaning that we don't allow our content to be redistributed or adapted for use without our permission. You don't have to agree with this, but if you don't, please do not use this site.

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Contact Us

We welcome your feedback and thoughts. Your comments and suggestions are important to us, and they will help us continue to improve the content of this site. At the moment, you can send us a direct message on Discord @davdav1233#3157 or @Sed#6384. Thanks for visiting our site!


Why are some pages still marked as “incomplete”?

One of the primary goals of this website is to create pages that are of good quality. We believe that the first step in doing so is to have a good grasp of concepts that we are writing on. We take as much time as needed to make sure that we get things right, but this also means that some pages will remain incomplete for an extended period. That being said, we update this site regularly. Make sure to check back every once in a while!

FOUR has been last updated on January 24, 2022.

Where does “FOUR” come from?

FOUR is a reference to this.

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© 2018-2022 davdav1233 and cosin307. All Rights Reserved