diff --git a/OpenRA.Game/FileSystem/InstallShieldPackage.cs b/OpenRA.Game/FileSystem/InstallShieldPackage.cs
index a479f7ae40..5089edd74b 100644
--- a/OpenRA.Game/FileSystem/InstallShieldPackage.cs
+++ b/OpenRA.Game/FileSystem/InstallShieldPackage.cs
@@ -18,7 +18,7 @@ namespace OpenRA.FileSystem
 {
 	public sealed class InstallShieldPackage : IReadOnlyPackage
 	{
-		struct Entry
+		public struct Entry
 		{
 			public readonly uint Offset;
 			public readonly uint Length;
@@ -124,6 +124,8 @@ namespace OpenRA.FileSystem
 			return index.ContainsKey(filename);
 		}
 
+		public IReadOnlyDictionary<string, Entry> Index { get { return new ReadOnlyDictionary<string, Entry>(index); } }
+
 		public void Dispose()
 		{
 			s.Dispose();
diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 867149f46c..dbc816b25a 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -751,6 +751,7 @@
     <Compile Include="Traits\Radar\RadarColorFromTerrain.cs" />
     <Compile Include="Traits\Radar\JamsRadar.cs" />
     <Compile Include="AI\DummyAI.cs" />
+    <Compile Include="UtilityCommands\ListInstallShieldContentsCommand.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
diff --git a/OpenRA.Mods.Common/UtilityCommands/ListInstallShieldContentsCommand.cs b/OpenRA.Mods.Common/UtilityCommands/ListInstallShieldContentsCommand.cs
new file mode 100644
index 0000000000..52678b81aa
--- /dev/null
+++ b/OpenRA.Mods.Common/UtilityCommands/ListInstallShieldContentsCommand.cs
@@ -0,0 +1,46 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.IO;
+using System.Linq;
+using OpenRA.FileSystem;
+
+namespace OpenRA.Mods.Common.UtilityCommands
+{
+	class ListInstallShieldContents : IUtilityCommand
+	{
+		public string Name { get { return "--list-installshield"; } }
+
+		public bool ValidateArguments(string[] args)
+		{
+			return args.Length == 2;
+		}
+
+		[Desc("ARCHIVE.Z", "Lists the content ranges for a InstallShield V3 file")]
+		public void Run(ModData modData, string[] args)
+		{
+			var filename = Path.GetFileName(args[1]);
+			var path = Path.GetDirectoryName(args[1]);
+
+			var fs = new OpenRA.FileSystem.FileSystem();
+			fs.Mount(path, "parent");
+			var package = new InstallShieldPackage(fs, "parent|" + filename);
+
+			foreach (var kv in package.Index)
+			{
+				Console.WriteLine("{0}:", kv.Key);
+				Console.WriteLine("\tOffset: {0}", 255 + kv.Value.Offset);
+				Console.WriteLine("\tLength: {0}", kv.Value.Length);
+			}
+		}
+	}
+}