Beginner walkthrough · Sliding number puzzle
Threes: the whole board moves, every single time
Tiles slide, matching tiles merge, and a new tile enters from the edge you swiped away from. Ones and twos combine into threes; threes combine with threes; and on it goes. The rule that catches everyone is that a swipe moves the entire board, so there is no such thing as moving one tile.
- Type
- Sliding merge puzzle
- Session
- Five to twenty minutes per game
- Controls
- Swipe in any of four directions
- Learning curve
- Rules in a minute, good play over weeks
- Played one-handed
- Yes
Before you start
A four-by-four board with a handful of tiles. A one and a two merge into a three. Two threes make a six, two sixes make a twelve, and so on. Ones only ever merge with twos, and twos only with ones — that asymmetry is the entire strategic content of the game.
Unlike most puzzles of this shape, tiles slide only one square per swipe, not all the way across. That single difference makes Threes a game about arrangement rather than momentum.
The first run, beat by beat
Play a few minutes carelessly and lose. It is worth doing — the failure state teaches faster than any description of it. The board fills, no swipe produces a merge, and the game ends.
Then start again with one rule: pick a corner and never swipe away from it. Keep your largest tile there and build the next-largest beside it. Almost every long game is some version of this, and almost every short game is a board where the big tiles ended up scattered.
Watch the incoming tile. The game shows you the next tile at the top of the screen, and it is the only forward information you have. A swipe that opens the edge where a one is about to arrive, when your board is starved of ones, is a good swipe even if it merges nothing.
What to expect in your first hour
Games that end at a few hundred points, then a jump when the corner habit lands. The board being small means late games get genuinely tense — with three empty squares left, every swipe has to be planned.
There is no progression, no unlocks and no reward beyond the number. It is closer to solitaire in shape than to any other game on this site.
Five habits worth building early
- Pick a corner and defend it. Never swipe in the direction that moves your largest tile out of it.
- Read the next tile. It is shown at the top and it is the only information about the future you get.
- Ones and twos only pair with each other. Boards clog with unmatched ones, and knowing that changes which merges you chase.
- Tiles move one square. Coming from other merge games, this is the assumption that will cost you your first several boards.
- A non-merging swipe can still be right. Sometimes the point of a move is where the new tile enters, not what it joins.
Is it for you?
It is the most portable game covered here — a single board, no timer, no connection needed, and it survives being put down for a week.
It will not suit you if you want variety. It is one board and one rule set, forever. If that sounds thin, Mini Metro on this site gives you a new city every time.
About this page. The Game Lantern is an informational site about mobile games. Threes is described here as free-to-play entertainment: it is played purely for fun, there is no financial element of any kind, nothing of monetary value can be paid in or taken out, and no prizes are involved. Any scores or counters mentioned exist only inside the game. We have no commercial or contractual relationship with any publisher or developer whose game is named on this page.