Lego Fortnite players can increase their power by finding Blast Cores in the sandbox survival game. However, this coveted item comes with the risk of exploding one's character, since it only comes from one tricky explosive monster. Because of this, these drops are considered rare and are used pretty sparingly throughout the world, much like Lego Fortnite's Sand Claws. It is a mid-to-late game item and as long as you learn how to stay alive, Blast Cores are worth finding.

The reason why you need to find Blast Cores in Lego Fortnite is for the Metal Smelter. This not only upgrades your items but lets you craft useful survival materials as well. Epic-tier level equipment is also necessary later on in the game, so these Cores are extremely important to find. They are obtained by defeating an enemy called Blasters, which can be very difficult without losing precious resources or dying.