Compete against other players in the free IO game, KnifeBlades.io! In this battle royale game, your objective is to collect the knives and grow bigger. To do that, you'll only need your mouse. Simply, click and drag to move around and you'll automatically collect the blades. If you release the mouse, you'll enter a defense mode. Attacking your enemies and collecting their blades will also double your chance of survival. There is only one motto here; kill or be killed!