diff --git a/UndertaleModLib/Compiler/Parser.cs b/UndertaleModLib/Compiler/Parser.cs
index e73662c0e..fe5f6a672 100644
--- a/UndertaleModLib/Compiler/Parser.cs
+++ b/UndertaleModLib/Compiler/Parser.cs
@@ -660,10 +660,19 @@ private static Statement ParseFunction(CompileContext context)
             {
                 Statement result = new Statement(Statement.StatementKind.FunctionDef, EnsureTokenKind(TokenKind.KeywordFunction).Token);
                 Statement args = new Statement();
+                bool expression = true;
+                Statement destination = null;
+
+                if (GetNextTokenKind() == TokenKind.ProcFunction)
+                {
+                    expression = false;
+                    Statement s = remainingStageOne.Dequeue();
+                    destination = new Statement(Statement.StatementKind.ExprFuncName, s.Token) { ID = s.ID };
+                }
 
                 EnsureTokenKind(TokenKind.OpenParen);
 
-                while (remainingStageOne.Count > 0 && !hasError && !IsNextToken(TokenKind.EOF) && !IsNextToken(TokenKind.CloseParen))
+                while (remainingStageOne.Count > 0 && !hasError && !IsNextToken(TokenKind.EOF, TokenKind.CloseParen))
                 {
                     Statement expr = ParseExpression(context);
                     if (expr != null)
@@ -682,7 +691,16 @@ private static Statement ParseFunction(CompileContext context)
                 if (EnsureTokenKind(TokenKind.CloseParen) == null) return null;
 
                 result.Children.Add(ParseStatement(context));
-                return result;
+                if (expression)
+                    return result;
+                else // Whatever you call non-anonymous definitions
+                {
+                    Statement trueResult = new Statement(Statement.StatementKind.Assign, new Lexer.Token(TokenKind.Assign));
+                    trueResult.Children.Add(destination);
+                    trueResult.Children.Add(new Statement(Statement.StatementKind.Token, trueResult.Token));
+                    trueResult.Children.Add(result);
+                    return trueResult;
+                }
             }
 
             private static Statement ParseFor(CompileContext context)
diff --git a/UndertaleModLib/Decompiler/Decompiler.cs b/UndertaleModLib/Decompiler/Decompiler.cs
index 8ade85ecb..ad11b421f 100644
--- a/UndertaleModLib/Decompiler/Decompiler.cs
+++ b/UndertaleModLib/Decompiler/Decompiler.cs
@@ -1173,6 +1173,14 @@ public override string ToString(DecompileContext context)
                     }
                 }
 
+                // Someone enlighten me on structs, I'm steering clear for now.
+                // And find the "right" way to do this.
+                if (Value is FunctionDefinition functionVal && functionVal.Subtype != FunctionDefinition.FunctionType.Struct)
+                {
+                    functionVal.IsStatement = true;
+                    return functionVal.ToString(context);
+                }
+
                 string varPrefix = (HasVarKeyword ? "var " : "");
 
                 // Check for possible ++, --, or operation equal (for single vars)
@@ -1306,6 +1314,7 @@ public enum FunctionType
             public UndertaleCode FunctionBodyCodeEntry { get; private set; }
             public Block FunctionBodyEntryBlock { get; private set; }
             public FunctionType Subtype { get; private set; }
+            public bool IsStatement = false; // I know it's an expression, yes. But I'm not duplicating the rest.
 
             internal List<Expression> Arguments;
 
@@ -1354,12 +1363,19 @@ public override string ToString(DecompileContext context)
                     FunctionDefinition def;
                     var oldDecompilingStruct = context.DecompilingStruct;
                     var oldReplacements = context.ArgumentReplacements;
+
                     if (Subtype == FunctionType.Struct)
                         context.DecompilingStruct = true;
                     else
                     {
                         context.DecompilingStruct = false;
-                        sb.Append("function(");
+                        sb.Append("function");
+                        if (IsStatement)
+                        {
+                            sb.Append(" ");
+                            sb.Append((context.Statements[0].Last() as AssignmentStatement).Destination.Var.Name.Content);
+                        }
+                        sb.Append("(");
                         for (int i = 0; i < FunctionBodyCodeEntry.ArgumentsCount; ++i)
                         {
                             if (i != 0)
diff --git a/UndertaleModLib/Models/UndertaleRoom.cs b/UndertaleModLib/Models/UndertaleRoom.cs
index 171e17372..f61c8615e 100644
--- a/UndertaleModLib/Models/UndertaleRoom.cs
+++ b/UndertaleModLib/Models/UndertaleRoom.cs
@@ -1178,7 +1178,7 @@ protected void OnPropertyChanged([CallerMemberName] string name = null)
         // GMS 2022.1+
         public bool EffectEnabled { get; set; }
         public UndertaleString EffectType { get; set; }
-        public UndertaleSimpleList<EffectProperty> EffectProperties { get; set; }
+        public UndertaleSimpleList<EffectProperty> EffectProperties { get; set; } = new();
 
         public void UpdateParentRoom()
         {
diff --git a/UndertaleModTool/Scripts/CommunityScripts/FancyRoomSelect.csx b/UndertaleModTool/Scripts/CommunityScripts/FancyRoomSelect.csx
index 497d75135..fc28e0e82 100644
--- a/UndertaleModTool/Scripts/CommunityScripts/FancyRoomSelect.csx
+++ b/UndertaleModTool/Scripts/CommunityScripts/FancyRoomSelect.csx
@@ -1,20 +1,9 @@
 //Originally created by _creepersbane#2074
 //Adapted to work with all games by Grossley
+//Adapted to GMS 2.3+ by Space Core/Jacky720
 
 EnsureDataLoaded();
 
-if (Data?.GeneralInfo?.DisplayName?.Content.ToLower() == "deltarune chapter 1 & 2")
-{
-    ScriptError("Error 0: Incompatible with the new Deltarune Chapter 1 & 2 demo");
-    return;
-}
-else if (Data?.GeneralInfo?.DisplayName?.Content.ToLower() == "deltarune chapter 1&2")
-{
-    ScriptError("Error 1: Incompatible with the new Deltarune Chapter 1 & 2 demo");
-    return;
-}
-
-
 var obj = Data.GameObjects.ByName("obj_roomselector");
 
 if(obj == null) {
@@ -127,14 +116,19 @@ update = 1
 scale = 1
 fnt = -4
 len = 0
-ss = -4
-for (i = room_first; i <= room_last; i++)
+ss = -4" 
++ (!Data.GMS2_3 
+  ? "for (i = room_first; i <= room_last; i++)"
+  : "for (i = 0; room_exists(i); i++)")
++ @"
 {
     if room_exists(i)
         room_names[i] = (((room_get_name(i) + "" ("") + string(i)) + "")"")
     else
         room_names[i] = -4
 }
+// for 2.3
+myroom_last = i
 ww = -1
 hh = -1
 xx = 0
@@ -164,8 +158,11 @@ if selector_active
             positions[0] = -1
             roomid = -1
             if (dest_room != """" && dest_room == string_digits(dest_room))
-                roomid = real(dest_room)
-            for (i = room_first; i <= room_last; i++)
+                roomid = real(dest_room)"
+            + (!Data.GMS2_3
+              ? "for (i = room_first; i <= room_last; i++)"
+              : "for (i = 0; i < myroom_last; i++)")
+            + @"
             {
                 if is_string(room_names[i])
                 {
@@ -410,8 +407,15 @@ selector_active = 0
 exiting = 0
 ", Data);
 
+string version;
+if (Data.GMS2_3)
+    version = "2.3";
+else if (gms2)
+    version = "2";
+else
+    version = "1";
 
-ScriptMessage("Successfully applied for Gamemaker " + (gms2 ? 2 : 1).ToString() + @"
+ScriptMessage(@$"Successfully applied for Gamemaker {version}
 Controls:
 - F3: open/close menu
 - Escape: close menu