How to play Two Player Tetris
Two Player Tetris is a co-op block-stacking puzzle: two people, one 10 × 20 board and one team score. This guide covers getting into a game, the controls, how scoring works, and the rules and best strategy for each of the six modes.
Getting into a game
- Get a code. When you open the game you're put in your own room with a 4-character code (letters and numbers, no easily confused ones like O and 0). NEW ROOM gives you a fresh code.
- Invite one friend. Send them the code any way you like — chat, text or a video call. They type it into ENTER CODE and press JOIN. A room holds exactly two players.
- Play. The round starts automatically when the second player arrives. Either of you can change mode at any time; switching restarts the round in the new mode.
- Restart. After a game over, press R or Enter, or tap the board, to go again.
Before you start, pick a name (it's only used for your local leaderboard) and a piece color so your partner can tell your blocks from theirs.
Controls
- Move: ← → or A D — hold to slide.
- Rotate: ↑ or W.
- Soft drop: ↓ or S — hold to keep dropping.
- Hard drop: Space — slams the piece to its ghost position.
- Hold: C or Shift — swap the current piece into your hold slot, once per piece.
- Phones and tablets: on-screen buttons under the board do the same things; move and soft drop repeat while you hold them.
Pieces, levels and scoring
Pieces come from a 7-bag randomizer, so you see every one of the seven shapes once in each set of seven — long droughts without a line piece don't happen. Each player has a three-piece preview, a hold slot and a ghost piece showing where the current piece will land.
Clearing 1, 2, 3 or 4 lines at once scores 100, 300, 500 or 800 points, multiplied by the current level. Every 10 lines the level goes up and pieces fall faster. Points count toward the shared team score and the score of the player who placed the piece. The top 20 results are kept in the leaderboard on your own device.
The six co-op modes
Shared field
One board, two pieces falling at once. You each control your own piece, and falling pieces pass through each other, so you never block your partner mid-air — they only interact once they lock onto the stack.
Tip: agree on lanes. One player builds on the left, the other on the right, and whoever gets a line piece takes the well.
Split field
The board is divided down the middle. Player 1 stacks only in the left five columns and Player 2 only in the right five. A row clears only when all ten cells are full, so neither half can clear lines on its own.
Tip: keep your halves at roughly the same height. If one side runs ahead, its rows sit waiting for the other half and the stack creeps up.
Garbage Survival
Every 10 seconds a grey garbage row with a single gap pushes up from the bottom, and a banner counts down to the next one. You win time by clearing lines faster than the garbage arrives; if the stack reaches the top, the round ends.
Tip: dig to the gaps. Clearing a garbage row through its hole takes a line of garbage off the board — and don't stack high right before the next row rises.
Relay
Only one piece is in play at a time. When it locks, control passes to your partner, and a banner shows whose turn it is.
Tip: think one piece ahead for your partner. Look at their next piece in the preview and leave a spot it fits cleanly.
Duo Controls
One shared piece, two sets of hands. Player 1 moves it left and right and hard-drops; Player 2 rotates it and uses hold; both of you can soft-drop.
Tip: the player who rotates should call the shape out loud (“flat”, “upright”) and the mover calls the column. Play on a voice or video call — this mode is chaos in silence.
Architect
A dashed target shape appears on the board and you fill it together. There are ten targets that get bigger as you go — tiny block, small T, plus, small house, diamond, small heart, arrow, letter A, heart and smiley — and completing one adds a bonus of 500 × the Architect level.
Tip: it's the calmest mode and a good place to learn to coordinate before trying Duo Controls or Garbage Survival.
Playing well together
- Talk. A voice or video call makes every mode easier — say what you're about to place.
- Pick contrasting colors so you can instantly see whose blocks are whose.
- Use hold as a team resource. Keep a line piece in hold for the moment your partner opens a well.
- Start slow. Levels speed up every 10 lines, so a tidy stack early on pays off later.