tested version with most of the final functionality. Still a few known issues, like dragging to a row that extends to multiple lines

game.cs

@@ -3,6 +3,7 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
+using System.IO.Compression;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -16,6 +17,14 @@ public partial class game : Control
 			return _SettingsPopup;
 		}
 	}
+	private create_menu_popup _CreateMenuPopup;
+	private create_menu_popup CreateMenuPopup
+	{ get
+		{
+			_CreateMenuPopup ??= GetNode<create_menu_popup>("%CreateMenuPopup");
+			return _CreateMenuPopup;
+		}
+	}
 	[Export]
 	private Vector2 _CardSize = new(200, 200);
 	public Vector2 CardSize
@@ -77,10 +86,24 @@ public partial class game : Control
 			}
 			else
 			{
+				CreateMenuPopup.ClosePopup();
 				SettingsPopup.ShowPopup();
 			}
 			GetViewport().SetInputAsHandled();
 		}
+		else if (@event.IsActionPressed("CreationMenu"))
+		{
+			if (CreateMenuPopup.Visible)
+			{
+				CreateMenuPopup.ClosePopup();
+			}
+			else
+			{
+				SettingsPopup.ClosePopup();
+				CreateMenuPopup.ShowPopup();
+			}
+			GetViewport().SetInputAsHandled();
+		}
     }
 	public void Clear()
 	{
@@ -109,6 +132,7 @@ public partial class game : Control
 		var node = GetNode<VBoxContainer>("%RowContainer");
 		node.AddChild(row);
 		node.MoveChild(row, index);
+		PropogateCardSize();
     }
 	public void RemoveRow(string id)
 	{
@@ -175,17 +199,25 @@ public partial class game : Control
 	}
 	public void ImportGame(string filename)
 	{
-		GD.Print($"Importing from {filename}");
-		Serializer.LoadFromSerial(this,
-			File.ReadAllText(filename)
+		using var reader = new StreamReader(
+			new DeflateStream(
+				new FileStream(filename, FileMode.Open),
+				CompressionMode.Decompress
+			)	
 		);
+		var s = reader.ReadToEnd();
+		Serializer.LoadFromSerial(this, s);
 	}
 	public void ExportGame(string filename, ExportSettings es)
 	{
-		GD.Print($"Exporting to {filename}");
-		File.WriteAllText(filename,
-			Serializer.CreateGameJson(this, es)
+		using var writer = new StreamWriter(
+			new DeflateStream(
+				new FileStream(filename, FileMode.OpenOrCreate),
+				CompressionLevel.Optimal
+			)
 		);
+		var json = Serializer.CreateGameJson(this, es);
+		writer.Write(json);
 	}
 	#region Commands
 	public void MoveCard(string cardId, string targetRowId, int? toIndex = null)
@@ -244,8 +276,7 @@ public partial class game : Control
 	}
 	public void CreateRow(Color? color = null, string title = null)
 	{
-		var scn = GD.Load<PackedScene>("res://row.tscn");
-		var r = scn.Instantiate() as row;
+		var r = row.MakeRow(GetTree());
 		if (!string.IsNullOrWhiteSpace(title))
 			r.RowText = title;
 		if (color is Color color1)