Horde Rush is a limited-time cooperative game mode in Fortnite Battle Royale, similar to the Destroy the Encampments mission in Fortnite: Save the World. Players must work together to fend off hordes of Cube Monsters at various locations and collect score multipliers by surviving longer and taking down enemy monsters. There are nine Horde Rush challenges that players can try to complete as they enjoy this game mode, and there are exquisite cosmetic rewards for players to claim. The Horde Rush mode should appear in the first row of options in the Play tab, right beside Battle Royale and Zero Build. Horde Rush will be available until the end of Chapter 4 Season 4.