3plus1.io - Online Strategy Puzzle Game

3plus1.io is a free-to-play online strategy puzzle game designed for players of all ages. The core objective is to complete as many squares as possible on a grid by claiming sides one at a time. You can join public games with up to 6 players or create private parties to challenge friends. The game offers different grid sizes to keep the experience fresh and suspenseful. With straightforward controls and strategic depth, no match is predictable. Success requires observation and adaptation, making every round a new challenge.

To play, each player takes turns selecting and validating a side of a square on the grid. Each side can be used only once. You have 15 seconds to make a move; if you do not, your turn is passed. Completing a square earns you a point and grants an extra turn. The player with the most squares at the end wins. Use a mouse on computer or touch on mobile to select sides. The information bar and stopwatch help you track gameplay.

Game features include multiplayer strategy gameplay, private parties for playing with friends, multiple grid sizes for varied challenges, and free play without any cost. The game is accessible on both computer and mobile devices.

3plus1.io offers a clean and engaging puzzle experience that rewards careful planning. It is a great choice for quick mental breaks or longer strategic sessions with friends.

Compatibility

💻 Desktop | 📱 Mobile | 📟 Tablet – All supported · Best with Chrome or Safari