3D Four in a Row

Also known as Connect Four or Connect 4.
210BoardPlay vs CPUNo sign-up, free

3D Four in a Row is a two-player board game that takes about 10 minutes. Drop beads on 16 pegs in a 4×4 grid. The first to line up four up, across or diagonally, including through levels, wins.

Play with friendsJust send the invite link. No sign-up for them either
Pick a time and invite
Play over time
Practice against the computerStart right away. Choose the strength
CPU strength
Find an opponent onlineComing soon (October)
Tutorial (3 min)Learn the rules as you play

What we record

3D Four in a Row in 30 seconds

  1. Set upUse 16 pegs in a 4×4 grid. Red goes first with red beads; Blue goes second with blue beads.
  2. Take turnsDrop one bead on a peg. It falls to the lowest free space; each peg holds four.
  3. WinLine up four of your beads first: up, across or diagonally, including through levels.
  4. DrawIf all 64 spaces fill without a line of four, the game is a draw.

At a glance

The numbers for this game. These match the actual game implementation.
ItemThis game
Players2 players
Play timeAbout 10 min
TypeBoard
Ranked playNo
Practice against the CPUYes
PriceFree (no account needed)
Rights holderA public-domain classic game
Last updated2026-10-26

How to play 3D Four in a Row online with friends

  1. Tap "Play with friends"A party is created with a 6-character code. No account is needed.
  2. Send a link or QR codeShare it on LINE, or just read the code aloud.
  3. Everyone opens it in a browserOnce 2 players have joined, the host taps "Start".

Rule highlights

Setup, play, winning, and house rules

Setup

  • For two players. On your own, play against the computer.
  • Use 16 pegs and 32 beads of each colour. The first seat starts as Red. The first move switches when you play again.

How to play

  • On your turn, tap a peg to preview the landing place, then quickly tap it again or press Choose this at the bottom center to drop one bead. It lands in the lowest empty level.
  • Each peg holds four beads. Tapping a full peg shows a cross and a reason.
  • Swipe the board to rotate it. Pegs and bead positions stay the same.

Winning

  • The first to line up four of their beads wins, up a peg, across or diagonally within a level, or diagonally through levels.
  • If all 64 spaces fill without a line of four, the game is a draw.

House rules

Default is this site’s setting. Changeable shows whether the party can change it.
NameDescriptionDefaultChangeable
Alternate first moveSwitch who goes first (Red) after each game.OnCan be changed

Send feedback or a bug about this game

Request a setting for this game

We publish the feedback you send and what we do about it here

FAQ

How many can play?

Two players, or one player against the computer.

How is it different from Four in a Row?

You drop beads onto 16 pegs in a 4×4 grid, so the board has height. Four in a line along a peg or diagonally across levels also wins.

Is it free?

Yes. Play free in your browser without signing up.

Can I play on a phone?

Yes. No app is needed — just open it in a browser. You can join the same party as people on a PC or tablet.

Can two people play?

Yes. This game supports 2 or more players.

Can I play against the computer (CPU)?

Yes. You can play against computer opponents without inviting anyone.

Can I play online with friends far away?

Yes. Start a party and send its invite link. Friends can join in their browsers without signing up.

Is there an app?

This is a free app that runs in your browser. No installation is needed.

Can we play without being online at the same time?

Yes. Choose “Turn-based (told each turn)” and you can make one move whenever you like. We tell you when it is your turn. A Party ends automatically, with no winner or loser, after 45 days without a move.

Connect Four and Connect 4 are trademarks of Hasbro. This page is not affiliated with Hasbro.

Rights holder and physical edition

This is a public-domain classic game. The rules follow the standard reference rules.

Related games

Same type (Board)

Same player count

Last updated 2026-10-26 · Run by Qdan, Inc.