Welcome to Knife Arena(Knife.io), the multiplayer knife simulation game. You are a knife, flipping around and beating other knives. Select your favourite knife to battle. Flip to attack with you knife blade. Move the knife with joystick and flip to boost. Attack other knives to get bigger. The bigger you are, the more harm your attack does. Your goal is to get the highest score and become the best knife in the world! Support for both portrait and landscape modes.