Play TETR.IO, the free-to-win online stacker game in the same genre as Tetris. Face off against the world in multiplayer, or claim a spot on the leaderboards!

TETR.IO DESKTOP Break out of the browser and take your game to pro level with maximum performance

Track players' progress and achievements on TETRA CHANNEL - the official companion site to TETR.IO, the modern yet familiar online stacker.

Discover TETR.IO, the modern online stacker game with a familiar touch. Learn about its features, development, and community.

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Compared to other browser-based games, TETR.IO tries to give you a full-fledged desktop experience. Lower-class devices might have trouble playing the game on default settings. But don't worry, there's …

3 days ago · TETRA LEAGUE STATE as of 4/23/2026, 4:00:01 PM

For non-Legacy, updated Electron to version 37 (Chromium 138). VSync is now enabled by default, and has been automatically enabled for all users. Uncapped FPS has been a cause of issues for many, …

Feb 13, 2026 · PATCH NOTES - TETR.IO PATCH NOTES Please consider supporting TETR.IO development!

Thank you to everyone who participated in, tuned in to see and helped organize any of the 86 qualifier tournaments, as well as the main events. We hope to see you again for the next TETR.IO World …