🎯 Classic Strategy Game

Connect 4 Board Game Online

Drop your discs, block your opponent, and connect four in a row! Play against the computer or challenge a friend on the same device. Free to play, right in your browser.

🔴 Connect Four

Red's turn
You · Red
Wins: 0
VS
Computer
Wins: 0
Red starts!  Choose a column to drop your disc.

How to Play Connect 4

Connect 4 is a classic strategy board game for two players. Each player takes turns dropping colored discs into a seven-column board. The first player to connect four discs in a straight line wins.

STEP 01

Choose a Column

Click one of the seven numbered buttons above the board to select where your disc will drop.

STEP 02

Make a Line

Connect four of your discs horizontally, vertically, or diagonally before your opponent does.

STEP 03

Win the Match

Block threats, plan your next moves, and use New Game to start another round.

Game Features

  • Play against the computer with Easy, Medium, and Hard settings.
  • Play two-player matches on the same device.
  • Undo moves, track scores, and toggle sound effects.
  • Responsive board for desktop, tablet, and mobile screens.
  • No download or account required.

Connect 4 Board Game: Strategy Guide

Winning at Connect Four takes more than placing discs quickly. Look at the spaces your move opens up and consider what your opponent can do next.

Play Near the Center

The middle columns participate in more possible four-disc lines than the outer columns. Building connections near the center can give you more options for winning.

Block Three in a Row

If your opponent has three connected discs with an available winning space, check whether you can block that space immediately. Missing an obvious threat can end the game.

Build Multiple Threats

Try to create more than one potential winning line. When two winning opportunities are available at once, your opponent may not be able to stop both.

Frequently Asked Questions

Is Connect 4 free to play on Gameso?

Yes. You can play this browser version for free without downloading an app or creating an account.

Can I play Connect 4 against the computer?

Yes. Choose Play vs Computer and select Easy, Medium, or Hard difficulty from the game settings.

Can two people play on one device?

Yes. Choose Two Players in Game Mode. Players can take turns using the same screen.

How do you win Connect Four?

Connect four of your own discs in an uninterrupted horizontal, vertical, or diagonal line before your opponent does.

What happens if the board fills up?

If all 42 spaces are filled and neither player has connected four, the game ends in a draw.

Does Connect 4 work on mobile phones?

Yes. The board adjusts to smaller screens, so you can play on compatible smartphones, tablets, and desktop browsers.