"3D Gear" is a science fiction style puzzle. If you love hi tech, or love sci-fi, or love puzzle, "3D Gear" will be your favorite. It is easy to learn: only need link all gears. But higher levels have more gears, it is difficult to put them in right place. Each world has 200 levels. Finished one world can get 400 coins, you can unlock more world. Have fun!