I haven’t played that much, but it’s essentially survival sandbox in a Lego world. The game has a village mechanic where you do tasks to level up your village and build housing/beds for people who show up similar to Terraria. The game feels like it’s focused around building Lego-style towns with a survival element. The game has prefabs you can buy and put together in the game, but you can also build them yourself without buying them (I think).

The thing I’ve been impressed by is most emotes and characters from Battle Royal carry over into Lego counterparts.

All this said, Minecraft remains king. Fortnite Lego feels very much locked down and I have fears over what happens if Epic lose interest in it. I would be very cautious to invest time in it like you would a Minecraft or Terraria world.