Tetr.io

About Tetr.io

Tetr.io is a modern yet familiar online stacker developed by osk. Play against friends and foes all over the world, or claim a spot on the leaderboards - the stacker future is yours!

Screenshots and video

Playing with other people

Up to 999 players. You can drop into a game already running.

• Online multiplayer
• 5+ players
• Drop-in

Collections

• .io games

Tags and modes

• Single player10,653
• Indie4,952
• Also on Windows (PC)3,742
• Side view3,718
• Puzzle2,849
• Arcade2,156
• Also on Mac1,644
• Multiplayer1,552
• Also on Linux1,359
• Battle Royale117
• Online89
• JavaScript50
• PixiJS36
• Web Gl20
• Tetris16
• Stacker3

Tetr.io: questions and answers

Can I play Tetr.io in my browser?

Yes, on tetr.io. Tetr.io does not run inside other websites, so the Play button opens it in a new tab. There is nothing to install.

Who made Tetr.io?

Tetr.io was made by osk and came out in 2020.

What games are like Tetr.io?

If you like Tetr.io, try Tetr.io: Season 2, Deeeep.io and Sketchful.io. There is a longer list on the “Games like Tetr.io” page.