Gomoku

Play Gomoku online free against the computer — the classic five-in-a-row stone game, also known as Gobang. You are black and move first; place your stones and be the first to line up five in a row. Easy to pick up, deceptively deep, and playable on phone or desktop with no download and no sign-up.

How to play

• You play the black stones and move first; the bot plays white.
• Tap any empty cell to place a stone there.
• Players alternate placing one stone per turn.
• Line up exactly five of your stones in a row — horizontally, vertically, or diagonally — to win.
• Block the bot the moment it builds an open row of three or four.

Moving first is a real edge — play actively and build your own lines rather than only reacting to the bot. The key threat is the "open three" (three in a row with both ends free), because it forces a block; chaining two threats at once creates a double attack the bot cannot stop.