diff --git a/src/window/game.rs b/src/window/game.rs
index 9a24b85..9be7418 100644
--- a/src/window/game.rs
+++ b/src/window/game.rs
@@ -180,6 +180,9 @@ impl GameWindow {
         let mut viewport = child.initial_viewport();
         let title = viewport.title.clone().unwrap();
         let sim_id = child.sim_id();
+        if let Some(sim_id) = sim_id && self.show_player_name {
+            viewport.title = Some(format!("{title} ({sim_id})"));
+        }
         if let Some(state) = self.child_states.get(&viewport_id) {
             viewport.position = Some(state.position);
             viewport.inner_size = Some(state.size);