Krunker.io unblocked at the school game starts with a few steps of customizations options those are not compulsory. Set preferred options through the main menu for getting ready for cruel battles on the field. You also are allowed to log in with your social accounts to iO games for saving your profile to continue on any device. Remember that it’s a free-for-all battle. Move with WASD keys and use your weapon with mouse. There will be enemies all around you, so you need to keep watching around, not a single sight. Scroll mouse for watching around and aim at the enemy you’ve spotted. While you’re in a battle, another enemy could show up for shooting you from behind which is not appropriated by unblocked FPS action games players.