diff --git a/ArcFormats/Ice/ScriptISD.cs b/ArcFormats/Ice/ScriptISD.cs
new file mode 100644
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+++ b/ArcFormats/Ice/ScriptISD.cs
@@ -0,0 +1,58 @@
+//! \file       ScriptISD.cs
+//! \date       2023 Aug 25
+//! \brief      Ice Soft compressed binary script.
+//
+// Copyright (C) 2023 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using GameRes.Formats.Ankh;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.Ice
+{
+    [Export(typeof(ScriptFormat))]
+    public class IsdScript : GenericScriptFormat
+    {
+        public override string         Tag { get => "ISD"; }
+        public override string Description { get => "Ice Soft binary script"; }
+        public override uint     Signature { get => 0x01575054; } // 'TPW'
+
+        public override bool IsScript (IBinaryStream file)
+        {
+            return file.Signature == Signature;
+        }
+
+        public override Stream ConvertFrom (IBinaryStream file)
+        {
+            file.Position = 4;
+            int unpacked_size = file.ReadInt32();
+            var data = new byte[unpacked_size];
+            GrpOpener.UnpackTpw (file, data);
+            return new BinMemoryStream (data, file.Name);
+        }
+
+        public override Stream ConvertBack (IBinaryStream file)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}