Best Free 3D Games That Run Right in Your Browser

Three.js and WebGL mean a browser tab can now run full 3D games. On PlayKovo that covers fishing, farming, stealth, horror and puzzles. This list sticks to games that really use 3D (not just 3D-styled icons) and tells you what each asks from your device.

Relaxing 3D

• Tideline: a relaxing 3D fishing game. Cast your line, fight the fish, sell your catch and upgrade your gear to unlock new waters. Aim with the mouse and hold left click or Space.
• Farming Simulation Game: drive tractors, plant crops and manage your own farm. WASD or arrow keys steer the tractor.

3D puzzles

• Tap 3D Wood Block Away: rotate the puzzle and tap wooden blocks away in the right order.
• Marble Factory: sort marbles along a 3D production line into matching boxes.
• Hexa Stack 3D: drag hexagon stacks onto a 3D board you can rotate.

3D action and stealth

• Stealth Master 3D Game: sneak into enemy territory as a secret agent, avoid guards and take down the boss before your HP runs out. Fully playable by touch on mobile.
• Crewmate Rush Space Escape Run: a 3D WebGL space runner across multiple planet maps.
• Hexanaut.io: a free 3D multiplayer territory game.
• BoostBall Arena: 3D car soccer.

3D horror

• Imposter 3D online horror: survive a horror mystery in a multiplayer space station.
• Run from 67: sneak through a dark school, collect backpacks and escape before he hears you. WASD moves, the mouse looks and Shift sprints.

If a 3D game runs badly

• Close other tabs. Each tab uses memory, and 3D games use a lot of it.
• Turn on hardware acceleration in your browser settings if it is off.
• Update your browser. WebGL performance improves with newer versions.
• Use the lighter game. The puzzle games in this list are easy on older phones; the open-world ones are not.

Our guide to fixing lag in browser games goes through the fixes in order. For more 3D games, look at the action and simulation categories.