Line up five stones on a 3D board you can spin and tilt. Beat the AI across three difficulty levels, or face real players in server-judged online matches — with Renju rules, 6-language chat and records. No install, no sign-up.
🎮 Play now Free · instant playThe game UI auto-detects your browser language and runs in 6 languages.
Drag to spin the board and read the game from above or from an angle. Stones drop in with animation, and the winning five glow.
Easy for learning the rules, Medium for solid fundamentals — and Hard reads three moves ahead with minimax + alpha-beta search.
Create or join a room. Every move and result is judged by the server, turns are timed at 30 seconds, and a bot can fill in when no one is around.
Black is barred from double-three, double-four and overline. Exactly five wins for both colors — and an open four is declared a win on the spot.
Quick phrases and stickers in Korean, English, Spanish, Chinese, Japanese and Vietnamese — each player reads them in their own language.
Practice results are stored in your browser. Online wins build your rank from Bronze all the way to Master.
No more arguing about "what about six in a row?" — the referee enforces one consistent ruleset:
Five in a row — horizontal, vertical or diagonal. Six or more (an overline) is not a win for either color.
A four with both ends empty cannot be blocked, so it is declared a win immediately.
In Renju mode Black cannot play a double-three (3-3), double-four (4-4) or overline — the computer referee blocks the move with a notice.
If all 15×15 intersections fill without a five, the game ends in a draw.
Yes. Tap to place stones and drag to rotate the camera — it runs in any modern mobile browser.
They apply to Black in Renju mode: double-three (3-3), double-four (4-4) and overline (six or more). White has no restrictions. In practice, Easy and Medium use free-style rules without forbidden moves.
Yes. Create an online room and share the invite, or summon a room bot at your chosen difficulty while you wait for an opponent.
The interface and chat run in Korean, English, Spanish, Chinese, Japanese and Vietnamese — the page you are reading is one of six language entries.
Easy makes occasional mistakes, Medium plays sound fundamentals, and Hard performs a 3-ply minimax search with alpha-beta pruning — a real challenge for casual players.
Free online Gomoku (Omok / Five in a Row) — single player vs AI and real-time 1:1 matches, judged by the server.
