How is it different from flat Connect Four?

The base is 4×4 and four levels tall. Besides rows, columns and diagonals on one level, lines can climb across levels or run through the cube from corner to corner.

Yes, against the CPU, without signing in.

What happens if a player leaves during a game?

The CPU takes over for them, so the game does not stop. Online, you have 30 seconds per move; if time runs out, a move is made for you.

Asobi Lounge / Games / 3D Four in a Row

3D Four in a Row rules and how to play: line up four in a 4x4x4 cube

A two-player game on a 4×4 base with 16 poles: take turns dropping balls onto the poles, and the first to line up four of their colour wins, whether along a row, a column, a diagonal, a pole, or a line running corner to corner through the cube. There are 76 ways to line up four, so threats are much easier to miss than on a flat board. Turn the cube to look at it, and play the CPU at three strength levels.

Also known as: 3D Connect Four, Rittai Yonmoku
Players: 2 players (1 against the CPU)
Price: free
Runs in the browser (no install)

Play now

The game screen is in Japanese.

Games against the CPU and solo modes work right away without signing in. Online play (random matches and private rooms) and saving stats or leaderboard scores require signing in with a Google account. To play with a friend, your friend also needs to create an account and register as your friend.

3D Four in a Row modes

CPU match (CPU対戦): play the CPU at three strength levels. No sign-in needed
Random Match (ランダムマッチ): play someone online
Room Match (ルーム対戦): play a friend using a room ID or a friend invite (to invite a friend, they also need to create an account and register as your friend)

Basic rules of 3D Four in a Row

A 4×4 base holds 16 poles, and each pole takes up to four balls (64 places in all).
Players take turns choosing a pole and dropping a ball onto it. The ball stops at the lowest free place on that pole. A full pole cannot be chosen.
Four balls of your colour in a line win: along a row, a column, a diagonal, up a pole, or through the cube from corner to corner (76 lines in all).
If every pole fills up and nobody has four in a line, the game is a draw.

How to play on Asobi Lounge

In the 3D view (立体で見る), press a pole to drop a ball. Drag sideways, or use Turn left (左に回す) and Turn right (右に回す), to turn the cube.
On a phone, tap a pole to choose it, then tap it again to drop.
In the level view (段ごとに見る), the four levels sit side by side; press the place where a ball would stop (a dashed circle) to drop there.
When someone wins, the four balls in the line light up.

Tips

The eight places in the middle of the cube and the eight corners lie on the most lines.
Dropping a ball right under the last free place of your opponent's three in a line lets them take it. Watch the place under it.
One move that makes two lines of three at once cannot be blocked on both.
To avoid missing a threat, switch to the level view now and then and check each level and the diagonals.

Frequently asked questions

How is it different from flat Connect Four?: The base is 4×4 and four levels tall. Besides rows, columns and diagonals on one level, lines can climb across levels or run through the cube from corner to corner.
Can I play alone?: Yes, against the CPU, without signing in.
What happens if a player leaves during a game?: The CPU takes over for them, so the game does not stop. Online, you have 30 seconds per move; if time runs out, a move is made for you.
Is 3D Four in a Row free to play?: Yes, it costs nothing. Games against the CPU and solo modes work right away without signing in. Online play (random matches and private rooms) and saving stats or leaderboard scores require signing in with a Google account. To play with a friend, your friend also needs to create an account and register as your friend.