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TETR.IO
TETR.IO provides free online block-stacking play with multiplayer matches and performance statistics.
About TETR.IO
TETR.IO is an online block-stacking game in the same genre as Tetris. It offers multiplayer matches, including ranked TETRA LEAGUE duels and custom public and private rooms, as well as solo modes such as 40 Lines, Blitz, Zen and Quick Play.
It also provides leaderboards, achievements and replays through Tetra Channel, with configurable controls and settings. Connection to multiplayer servers requires an updated client.
Key features
- Online multiplayer matches with friends and other players worldwide
- Ranked TETRA LEAGUE duels against players of similar skill
- Custom public and private rooms with adjustable rules
- Solo modes including 40 Lines, Blitz, Zen and Quick Play
- Leaderboards, achievements and replays through Tetra Channel
- Configurable keybinds and settings in Config menu
Best for: People who want block-stacking play with both multiplayer matches and solo modes.
Good for
- Offers both multiplayer matches and solo modes
- Supports public and private custom rooms with adjustable rules
- Provides leaderboards, achievements and replays
Watch out for
- Multiplayer servers require an updated client to connect
- Third-party modifications that alter gameplay are forbidden
TETR.IO at a glance
- Website
- tetr.io
- Category
- Gaming › Browser Multiplayer Games
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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TETR.IO FAQ
Can I create games to play with specific people?
Yes, Custom Game can create public and private rooms to play by your rules.
Can I change the controls?
Yes, keybinds and other settings can be changed in Config.
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