diff --git a/crates/border-wars/src/scenes/lobby.rs b/crates/border-wars/src/scenes/lobby.rs
index ffdbb2b..d3762cc 100644
--- a/crates/border-wars/src/scenes/lobby.rs
+++ b/crates/border-wars/src/scenes/lobby.rs
@@ -69,15 +69,17 @@ fn lobby_ui(
             return;
         }
 
-        ui.add(egui::Slider::new(&mut (*map_size), 0..=5).text("map size"));
+        ui.add(egui::Slider::new(&mut (*map_size), 1..=5).text("map size"));
 
         if !ui.button("Run the game").clicked() {
             return;
         }
 
         let seed = rand::thread_rng().gen::<u32>();
-        let radius =
-            get_map_sizes(all_players_query.iter().count() as u32)[*map_size as usize] as u16;
+        let index = *map_size as usize;
+        let nomber_of_players = all_players_query.iter().count() as u32;
+
+        let radius = get_map_sizes(nomber_of_players)[index] as u16 * 2;
 
         // Start the game.
         for player in all_players_query.iter() {