Building is a primary event in Fortnite. Bases are important for defense as these can only be created using the building process. Materials including Wood, Stone, and Metal are required to build and will need to be gathered if none is currently available in the player's inventory. Players can gather the materials needed from trees, cars, fences, signs, boulders, etc. Gather materials by destroying items with the pickaxe. The Building interface is also used to place traps.
To create a structure, use the build menu during a mission. If the player has the minimal amount needed to build the structure, a blue outline of the structure will appear in front of the player. Structure pieces can either be placed on the ground, or will need to be directly connected to another structure. The edit mode can be used to alter a structure piece. Deselect squares to resize a wall, stair or floor piece, or to remove sides from the pyramid structure. Deselecting squares can also create doorways and windows. Leave the edit option to see an outline of the structure with the selected modifications.
Initially only wooden structures can be built but as the character progresses, they will also be able to build using metal and stone. Adding XP points into the player's appropriate Skill nodes will allow the character to build better and stronger items that have more health and will endure more damage before being destroyed. The stronger the structure, the more resources it will take to build it.