diff --git a/world/src/lib.rs b/world/src/lib.rs
index f3db6fa281..b93b4bdcca 100644
--- a/world/src/lib.rs
+++ b/world/src/lib.rs
@@ -131,7 +131,7 @@ impl World {
         };
 
         const SPAWN_RATE: f32 = 0.1;
-        const BOSS_RATE: f32 = 0.1;
+        const BOSS_RATE: f32 = 0.03;
         let supplement = ChunkSupplement {
             npcs: if rand::thread_rng().gen::<f32>() < SPAWN_RATE && sim_chunk.chaos < 0.5 {
                 vec![NpcInfo {