About TETR.IO

TETR.IO is a free-to-win online stacker in the same genre as Tetris. You rotate and drop falling pieces to complete and clear lines, either alone against the clock or against other players from around the world. It runs in the browser with no download, and it adds modern touches like a hold piece and 180-degree rotation.

The fun comes from its range of modes. Race to clear 40 lines as fast as possible, score as many points as you can in a two-minute Blitz, relax in the neverending Zen mode, or climb the tower in Quick Play. When you want a real test, Tetra League matches you with players of similar skill in ranked 1v1 duels.

TETR.IO

tetr.ioPuzzle

Puzzle together in this free-to-win modern yet familiar online stacker in the same genre as Tetris. Play multiplayer games against friends and foes all over the world, or claim a spot on the leaderboards - the stacker future is yours!

How to play TETR.IO

  1. Pick Solo to challenge yourself or Multiplayer to play online against friends and other players.
  2. Choose a mode such as 40 Lines, Blitz, Zen, Quick Play or Tetra League.
  3. Move, rotate and drop each falling piece so it fits into the stack, using the hold slot to save a piece for later.
  4. Fill complete horizontal lines to clear them, chasing a fast time in 40 Lines, a high score in Blitz, or a win in versus matches.

Controls

Undo a placement (Zen mode)
Ctrl+Z
Redo a placement (Zen mode)
Ctrl+Y

Tips for TETR.IO

  • Check your keybinds on the welcome screen and adjust them, along with handling settings, in CONFIG until moving and dropping feels comfortable.
  • Use Zen mode to practice without pressure, since it never ends and lets you undo mistakes.
  • In Blitz, clearing lines raises your level, which gives more points but also more speed, so build a clean stack early.
  • In Tetra League, play out every match, because leaving early is penalized, and you need at least 10 games before your TR is shown.
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