diff --git a/src/complexagent.rs b/src/complexagent.rs
index b27dcab..cf51d9d 100644
--- a/src/complexagent.rs
+++ b/src/complexagent.rs
@@ -17,7 +17,7 @@ impl ComplexAgent {
             min_arena_depth_sub: 3,
             top_k_children: 2,
             up_to_minus: usize::MAX, // disable pruning
-            max_arena_size: 10_000_000,
+            max_arena_size: 50_000_000,
         };
         Self {
             color,