One dedicated Lego Fortnite player crafted a functional semi-truck using colorful bricks. Lego Fortnite is a permanent mode within the battle royale game, which lets players build pretty wild contraptions from the ground up. It offers way more building options than some survival-crafting games, and its main focus is on exploration. The multiplayer mode features several kits players can use to construct various structures, from beach houses to burger bars.