Build Royale at Cool Math Games is a multiplayer battle royale .io game that is very similar to Fortnite.io. In Build Royale, unlike in most other browser-based battle royale games, you can craft fortifications. At the beginning, your only tool available is a pickaxe. Gather resources and collect weapons that you can find all around the map. Build walls and other protective fortifications by using the gathered materials. Sometimes, you will have to use utility items such as med kits, they will increase your health and shield. Watch out for enemy players and try to survive their encounters. Move your character around the map with your W,A,S,D keys, jump using your space bar, sprint with your shift key. Move your mouse cursor to look around. Use your right mouse button to aim. Left click to gather resources or to shoot. Press M to open the map, Tab to open your inventory, E to pick up items, Q to enter the building mode. Use your numeric keys to change weapons, R to reload your weapon. If you get attacked and you are hurt, select a bandage or armor potion and apply it. Are you able to construct the strongest defense and become the last man standing in Build Royale.io cool math game?