diff --git a/Assets/Scripts/Bootstrap.cs b/Assets/Scripts/Bootstrap.cs
index 862575c..136a5d5 100644
--- a/Assets/Scripts/Bootstrap.cs
+++ b/Assets/Scripts/Bootstrap.cs
@@ -5,8 +5,9 @@ using UnityEngine;
 
 public class Bootstrap : MonoBehaviour
 {
+    private string mod;
     private float speed = 1.0f;
-    
+
     private void Start()
     {
         Debug.Log($"Running in {IntPtr.Size * 8}-bit mode");
@@ -16,8 +17,27 @@ public class Bootstrap : MonoBehaviour
     {
         if (GUILayout.Button("Start Quake!"))
         {
-            gameObject.AddComponent<UniQuake>();
+            var uq = gameObject.AddComponent<UniQuake>();
+            uq.BaseGame = MissionPack.Quake;
+            uq.ModDirectory = mod;
+        }
+        
+        if (GUILayout.Button("Start Scourge of Armagon!"))
+        {
+            var uq = gameObject.AddComponent<UniQuake>();
+            uq.BaseGame = MissionPack.Hipnotic;
+            uq.ModDirectory = mod;
         }
+        
+        if (GUILayout.Button("Start Dissolution of Eternity!"))
+        {
+            var uq = gameObject.AddComponent<UniQuake>();
+            uq.BaseGame = MissionPack.Rogue;
+            uq.ModDirectory = mod;
+        }
+
+        GUILayout.Label("Mod directory:");
+        mod = GUILayout.TextField(mod);
 
         GUILayout.Label("Time scale:");
         speed = GUILayout.HorizontalSlider(speed, 0.1f, 5.0f, GUILayout.Width(250));
diff --git a/Assets/Scripts/UniQuake.cs b/Assets/Scripts/UniQuake.cs
index b6ea67e..93e6a05 100644
--- a/Assets/Scripts/UniQuake.cs
+++ b/Assets/Scripts/UniQuake.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Runtime.InteropServices;
 using UnityEngine;
@@ -26,6 +27,9 @@ public class UniQuake: MonoBehaviour
     private bool initialized = false;
     private double startTime;
 
+    public MissionPack BaseGame { get; set; }
+    public string ModDirectory { get; set; }
+    
     /// <summary>
     /// Time since startup for this particular instance of Quake
     /// </summary>
@@ -38,21 +42,40 @@ public class UniQuake: MonoBehaviour
 
         LoadLibrary();
 
-        string[] arguments = 
+        List<string> arguments = new List<string>
         {
             "",
             "-window",
             "-width", "1440",
             "-height", "1080",
-            "+developer", "1",
         };
 
+        switch (BaseGame)
+        {
+            case MissionPack.Hipnotic:
+                arguments.Add("-hipnotic");
+                break;
+            case MissionPack.Rogue:
+                arguments.Add("-rogue");
+                break;
+        }
+
+        if (!string.IsNullOrEmpty(ModDirectory))
+        {
+            arguments.AddRange(new[] { "-game", ModDirectory });
+        }
+
+        if (Debug.isDebugBuild)
+        {
+            arguments.AddRange(new[] { "+developer", "1" });
+        }
+
         quakeParms = new QuakeParms
         {
             baseDir = Application.persistentDataPath,
             cacheDir = null,
         };
-        quakeParms.SetArguments(arguments);
+        quakeParms.SetArguments(arguments.ToArray());
         quakeParms.AllocateMemory(MemSize);
 
         startTime = Time.timeAsDouble;
@@ -177,6 +200,13 @@ public class UniQuake: MonoBehaviour
     }
 }
 
+public enum MissionPack
+{
+    Quake,      // Vanilla Quake
+    Hipnotic,   // Scourge of Armagon
+    Rogue,      // Dissolution of Eternity 
+}
+
 public class QuakeException: Exception
 {
     public int ExitCode { get; }