FAQ

Three people build together, and each one matches in secret. The board belongs to everyone, but the shapes each player is after are their own secret, and columns built by others can score for you too.

Three people share one board of 12 × 10 cells. No one has an area of their own, and a block once placed can be neither broken nor moved. When the game ends, all that is left on the board are the columns the three players took turns building.

Each player receives three pattern cards, each showing a color combination three cells tall. Those cards are the only hidden information in this game. The board, the blocks each player has left, and whose turn it is are all public. So reading the game means watching what your opponents build and guessing their cards from it.

Yes. Scoring does not look at who placed a block. It scans the whole board and counts the spots that match your cards, so if a column an opponent built for their own pattern also matches your card, those points are yours. Borrowing other people's hands without showing what you are after, and asking whether a good move for your pattern is also a good move for an opponent, is where the fun of this game lies.

Block colors are not left to chance; they are dealt so they can be counted. Blocks are not shuffled all together; each size is shuffled separately and split evenly across the three colors, so the number of red, green, and blue blocks in a game is always the same. Counting the remaining colors becomes a calculation rather than a hunch: you can guess a card from which color an opponent is saving, or, the other way round, choose your order so your own card doesn't show.

The blocks the three players receive are all the same shapes, differing only in color. No hand is better or worse because of block shapes.

Blocks are horizontal bars from 1 to 4 cells long, and they are placed horizontally only. There is no rotation. There is no gravity either: blocks do not fall; they rest on the floor or on blocks already placed. It is closer to stacking LEGO than to Tetris.

To place a block, all of these must hold.

• Every cell you want to place on must be empty.
• The block must be able to come in from above: it can't go into cells that are already covered from above.
• It only needs to touch one cell below. Shapes that stick out to the side (overhangs) are allowed.

So you only choose which columns to place in, and the height follows: the block rests on top of the highest point among those columns.

A cell that is empty but has been covered from above. With no way in from above, that cell can't be used until the game ends. Making an overhang seals the cells beneath it, so who speeds up the closing of the board, and how, is also part of reading the game.

• Red
• Green
• Blue

There are three, and the blocks in a game come in exactly the same number of each color.

It is a color combination of three vertically connected cells. There are no horizontal patterns.

• The order, read from bottom to top, matters. Red·Green·Blue and Blue·Red·Green are different cards.
• Every combination that can be made from the three colors is a card, and the three cards one player receives never repeat.
• Because blocks are placed only horizontally, completing a pattern needs a different block on each level, that is, at least three blocks.
• Because blocks stack only from the bottom up, patterns are also completed in order from the bottom level.

Before the game starts, you can swap (reroll) cards in Pick Patterns. Each card can be swapped once, up to three times in total, and a swap can't be undone. The selection screen shows each card's points and how many times it can be completed, so you can choose by looking at those.

There is no passing. A player who has no place left to put a block is out right there, and the remaining players finish the game. A player who is out is still scored the same way as everyone else when the game ends.

Final scores and ranks are settled all at once after the game ends. During the game, only your own score is shown on your screen, and other players' scores stay hidden until the game ends. Scoring covers the whole board and does not look at who placed which block.

The harder a card is to make, the more points it is worth. Lining up three of one color vertically is harder than it sounds, because the number of blocks of that color is fixed and others use the same columns.

Yes. Each card scans every column from bottom to top; each time it finds three cells in the right color order, it counts once, treats those three cells as used, and keeps scanning. So if six red cells stand in a row and the card is R·R·R, that is two. Four in a row is one: the one cell left over can't make three.

Cells count as "used" only while that card is being scored. Other cards use the same cells again, which means one column can match two of your cards at the same time.

1. Whoever completed patterns more times ranks higher.
2. If still tied, whoever completed a higher-scoring card ranks higher.
3. If still tied, the players share the rank.

Who takes the first turn is decided at random every game. Two players move between one of your turns and the next, so you wait a minute at most. A game takes roughly 5 to 6 minutes.

After 30 seconds, a move is placed for you automatically and the game goes on. The automatic move is chosen from the places where a block can go by a fixed rule, not by chance.

However many times you miss, you are not replaced by a bot and not counted as losing, and on your next turn you play yourself again. Ranks are decided by score alone.

No, that isn't shown. With each move, what you see is only how many players scored with that move. Showing who scored would give away the hidden cards.

Your seat stays. The screen tries to reconnect on its own, and once it is back, you return to the seat you were in and carry on from your next turn. Refreshing in the same tab also brings you back to your seat.

The game does not wait, though. If your turn comes while you are away, a move is placed for you automatically after 30 seconds, just as when you don't move in time. That move is not undone, but you are not replaced by a bot or counted as losing. While you are disconnected, other players' screens show your seat as disconnected.

Yes. Choose Solo to play one game with two bots. The rules are exactly the same as online. Difficulty is set by how likely the bots are to make mistakes, and bots receive only the same information as people: they can't see their opponents' pattern cards.

Create a private room and you get a six-character room code. Send that code to your friends. Characters that are easy to confuse (0 O 1 I L) are left out of codes so they are easy to write down.

The game is started by the host's button. It does not start automatically even when every seat is filled, so wait until everyone is there and then press it. If you start with fewer people, bots fill the empty seats.

Join through Quick Match. A game opens when three people gather, and if they don't all gather within 2 minutes, bots fill the remaining seats and the game opens.

In the waiting room, bot seats carry a ✦ mark, and bots are named like "Bot 1" and "Bot 2".

Yes. Each game gets its own /replay/… address. Send that link as it is and the person who receives it can watch it from the start too, and even if you jump ahead with [Skip], the scores are the same as watching to the end. Replays are kept for 90 days.

It runs in the browser, so there is nothing to install. The game scales up or down while keeping its proportions to fit the screen, so you can see the whole board at once even on a small screen.

Tap the settings button at the top right of the home screen or the game screen to open Settings. Under Volume, set Master · Sound effects · Music separately from 0 to 100. Sound effects and Music are multiplied by Master, so setting Master to 0 turns all sound off.

The Effects switch turns off on-screen animations only, so sound keeps playing when it is off. When the game tab is hidden (you switch to another tab or minimize the window), the music stops, and it plays again when you come back.

Yes. In Settings, choose between 한국어 and English under Language. You can't change it during a game, and the same goes for the waiting room, matching, and replay screens. Change it on a screen outside a game, such as the home screen.

This FAQ, the Terms, and the other documents are also available in Korean. There's no separate language picker inside the documents — the document links at the bottom of the game screen open the edition in whichever language you chose in Settings.

Yes, if you have an account. In Profile, open the Theme tab in [Custom] and tap a theme; it is equipped right away. A theme changes the look of the blocks on the board and of the whole screen together, and it is saved to your account. Guests can't enter Custom, so they see the default theme.

If colors are hard to tell apart, choose Red-green or Blue-yellow under Color vision in Settings. Guests can use color vision modes too.

On the game screen, tap an opponent's profile card and [Report] appears below the card. Tap [Report] and pick one of three reasons (Inappropriate profile photo · Inappropriate name · Cheating); the report is submitted right away, without asking you to confirm again. Bots can't be reported.

The other player is not told that you reported them. Reports are recorded and checked by the operator in person. A report alone does not lead to any automatic penalty.

No. Playing as a guest is the default. As a guest you can use Solo, Online, and replays in full.

Your profile name (one that no one else has), your profile photo, and your history are kept beyond your device. You can find past games again in a list, and only members can pick and use emotes in games.

You log in with your profile name and password. Your email address is used only for password resets.

Your history is kept with no time limit. A game's replay, however, disappears after 90 days, so for older games only the record remains and they can't be watched again.

Patch notes and maintenance schedules are posted in the Notice.