Drop discs, stack four in a row, and beat a friend in real time — share one link, no signup, free.
Play a friend online — create a room, share the link. Free, no signup.
Want to play Connect 4 online with a friend? Create a private room on Play Lounge, share the link, and your opponent drops straight into the game — no account, no download, no waiting. Both of you see every disc land in real time over a live connection, whether you are in the same room or on opposite sides of the country.
Prefer a quick solo game? Play Connect 4 vs the computer at three difficulty levels. The AI uses minimax search, so the hard setting will punish a lazy center rush. Everything runs free in your browser, installs as an app, and works on phone, tablet, and desktop.
Create a room, share one link. Your friend joins instantly — no accounts, no signup.
Every move syncs instantly over a live connection, even on a slow network.
No one online? Practice against a built-in AI with three difficulty levels.
Free with no download. Plays in any browser and installs as an app.
Players take turns dropping colored discs into a seven-column, six-row vertical grid. Discs fall to the lowest empty slot, so you choose a column, not an exact square. The first player to line up four of their discs in a row — horizontally, vertically, or diagonally — wins. Control the center column early, watch for diagonal threats, and set up a double threat (a "seven trap") your opponent cannot block in one move.
Yes. Create a private room on Play Lounge, share the invite link, and your friend joins instantly — both of you play the same board in real time. There is no signup and it is free.
Open Play Lounge, choose Connect Four, create a room, and send the link to the second player. When they open it they join your game automatically and you take turns dropping discs.
Completely free. No account, no download, and no in-game paywall. It also installs as a lightweight app on any device if you want it on your home screen.
Yes — pick the vs-computer mode and choose easy, medium, or hard. The hard AI plays a strong positional game, so it is good practice between multiplayer matches.
Play these online with a friend too — same room links, same zero setup.
