diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index c3f538ce..b5c4f750 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -134,6 +134,7 @@
+
diff --git a/ArcFormats/RealLive/ArcSEEN.cs b/ArcFormats/RealLive/ArcSEEN.cs
new file mode 100644
index 00000000..d84e2263
--- /dev/null
+++ b/ArcFormats/RealLive/ArcSEEN.cs
@@ -0,0 +1,117 @@
+//! \file ArcSEEN.cs
+//! \date 2017 Nov 22
+//! \brief AVG32 engine scripts archive.
+//
+// Copyright (C) 2017 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 System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using GameRes.Utility;
+
+namespace GameRes.Formats.RealLive
+{
+ [Export(typeof(ArchiveFormat))]
+ public class SeenOpener : ArchiveFormat
+ {
+ public override string Tag { get { return "SEEN"; } }
+ public override string Description { get { return "AVG32 engine scripts archive"; } }
+ public override uint Signature { get { return 0x4C434150; } } // 'PACL'
+ public override bool IsHierarchic { get { return false; } }
+ public override bool CanWrite { get { return false; } }
+
+ public SeenOpener ()
+ {
+ Extensions = new string[] { "" };
+ }
+
+ public override ArcFile TryOpen (ArcView file)
+ {
+ int count = file.View.ReadInt32 (0x10);
+ if (!IsSaneCount (count))
+ return null;
+
+ uint index_offset = 0x20;
+ var dir = new List (count);
+ for (int i = 0; i < count; ++i)
+ {
+ var name = file.View.ReadString (index_offset, 0x10);
+ var entry = FormatCatalog.Instance.Create (name);
+ entry.Offset = file.View.ReadUInt32 (index_offset+0x10);
+ entry.Size = file.View.ReadUInt32 (index_offset+0x14);
+ entry.UnpackedSize = file.View.ReadUInt32 (index_offset+0x18);
+ entry.IsPacked = file.View.ReadUInt32 (index_offset+0x1C) != 0;
+ if (!entry.CheckPlacement (file.MaxOffset))
+ return null;
+ dir.Add (entry);
+ index_offset += 0x20;
+ }
+ return new ArcFile (file, this, dir);
+ }
+
+ public override Stream OpenEntry (ArcFile arc, Entry entry)
+ {
+ var input = arc.File.CreateStream (entry.Offset, entry.Size);
+ var pent = entry as PackedEntry;
+ if (null == pent || !pent.IsPacked || input.Signature != 0x4B434150) // 'PACK'
+ return input;
+ using (input)
+ {
+ input.Position = 8;
+ int unpacked_size = input.ReadInt32();
+ var output = new byte[unpacked_size];
+ input.Position = 0x10;
+ LzDecompress (input, output);
+ return new BinMemoryStream (output, entry.Name);
+ }
+ }
+
+ internal static void LzDecompress (IBinaryStream input, byte[] output)
+ {
+ int dst = 0;
+ int bits = 0;
+ int mask = 0;
+ while (dst < output.Length)
+ {
+ mask >>= 1;
+ if (0 == mask)
+ {
+ bits = input.ReadUInt8();
+ mask = 0x80;
+ }
+ if (0 != (bits & mask))
+ {
+ output[dst++] = input.ReadUInt8();
+ }
+ else
+ {
+ int offset = input.ReadUInt16();
+ int count = (offset & 0xF) + 2;
+ offset >>= 4;
+ Binary.CopyOverlapped (output, dst-offset, dst, count);
+ dst += count;
+ }
+ }
+ }
+ }
+}