Spinz.io is a combination of Fidget Spinners + Agar.io + Slither. Collect dots to spin faster, collide with other spinners to take their mass, and become the top player in the game. How to Play [Spinz.io ] Use mouse to move spinner. Hold Left Mouse Button to boost (this uses your mass fuel). [Spinz.io ] Strategy Pick your fights strategically, and potentially set up combos by knocking other players into each other.