Ninjar.io is a new Diep style Io game. Free For All is the single mode which is available. Play solo against multiple different players around the real world and try to reach the top spot in which you can prove that you are the true master. After you appear in the arena, you will start off with a ninja and you should eat sushi scattered across the map to gain XP and increase your endurance. If you want to obtain more experience and unlock the next level faster, you can hunt down rivals. Besides, you can destroy NPCs which wear the black suit. Stats will pop up and you are recommended to spend points to upgrade them. Not only that, some weapons will be shown on the right-hand side. Pick one to add to your inventory and remember to deploy. If you cannot deal with stronger characters, you can jump or dash to run away. Good luck!