test case

Assets/Scripts/Game/RoomSettings.cs

@@ -13,7 +13,7 @@ namespace Game {
 	public struct RoomSettings {
 		public static Type Type;
 		public static Difficulty AIDifficulty;
-		public static Dictionary<Spawnable, SpawnRate> SpawnRates;
+		public static readonly Dictionary<Spawnable, SpawnRate> SpawnRates = new();
 		public static WinScore WinScore;
 		public static int CustomWinScore;
 	}

Assets/Scripts/MenuUI.cs

@@ -32,6 +32,11 @@ public class MenuUI : MonoBehaviour {
 	private void PlayPressed(ClickEvent evt) {
 		mainMenu.style.display = DisplayStyle.None;
 		playMenu.style.display = DisplayStyle.Flex;
+
+		RoomSettings.SpawnRates[Spawnable.Modification] = SpawnRate.Many;
+		RoomSettings.SpawnRates[Spawnable.NewBallPermanent] = SpawnRate.Many;
+		RoomSettings.SpawnRates[Spawnable.NewBallTemporary] = SpawnRate.Few;
+		RoomSettings.SpawnRates[Spawnable.Wormhole] = SpawnRate.Many;
 	}
 
 	private void SettingsPressed(ClickEvent evt) {