diff --git a/ArcFormats/ArcAil.cs b/ArcFormats/Ail/ArcAil.cs
similarity index 92%
rename from ArcFormats/ArcAil.cs
rename to ArcFormats/Ail/ArcAil.cs
index bfbe9fde..35eee078 100644
--- a/ArcFormats/ArcAil.cs
+++ b/ArcFormats/Ail/ArcAil.cs
@@ -49,16 +49,37 @@ namespace GameRes.Formats.Ail
             int count = file.View.ReadInt32 (0);
             if (!IsSaneCount (count))
                 return null;
-            long offset = 4+count*4;
+            var dir = ReadIndex (file, 4, count);
+            if (null == dir)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var input = arc.File.CreateStream (entry.Offset, entry.Size);
+            var pentry = entry as PackedEntry;
+            if (null == pentry || !pentry.IsPacked)
+                return input;
+            using (input)
+            {
+                byte[] data = new byte[pentry.UnpackedSize];
+                LzssUnpack (input, data);
+                return new BinMemoryStream (data, entry.Name);
+            }
+        }
+
+        internal List<Entry> ReadIndex (ArcView file, uint index_offset, int count)
+        {
+            var base_name = Path.GetFileNameWithoutExtension (file.Name);
+            long offset = index_offset + count*4;
             if (offset >= file.MaxOffset)
                 return null;
-            var base_name = Path.GetFileNameWithoutExtension (file.Name);
-            uint index_offset = 4;
-            var dir = new List<Entry>();
+            var dir = new List<Entry> (count/2);
             for (int i = 0; i < count; ++i)
             {
                 uint size = file.View.ReadUInt32 (index_offset);
-                if (0 != size)
+                if (size != 0 && size != uint.MaxValue)
                 {
                     var entry = new PackedEntry
                     {
@@ -74,8 +95,14 @@ namespace GameRes.Formats.Ail
                 }
                 index_offset += 4;
             }
-            if (offset != file.MaxOffset || 0 == dir.Count)
+            if (0 == dir.Count)
                 return null;
+            DetectFileTypes (file, dir);
+            return dir;
+        }
+
+        internal void DetectFileTypes (ArcView file, List<Entry> dir)
+        {
             byte[] preview = new byte[16];
             byte[] sign_buf = new byte[4];
             foreach (PackedEntry entry in dir)
@@ -111,21 +138,6 @@ namespace GameRes.Formats.Ail
                 if (0 != signature)
                     SetEntryType (entry, signature);
             }
-            return new ArcFile (file, this, dir);
-        }
-
-        public override Stream OpenEntry (ArcFile arc, Entry entry)
-        {
-            var input = arc.File.CreateStream (entry.Offset, entry.Size);
-            var pentry = entry as PackedEntry;
-            if (null == pentry || !pentry.IsPacked)
-                return input;
-            using (input)
-            {
-                byte[] data = new byte[pentry.UnpackedSize];
-                LzssUnpack (input, data);
-                return new BinMemoryStream (data, entry.Name);
-            }
         }
 
         static void SetEntryType (Entry entry, uint signature)
diff --git a/ArcFormats/Ail/ArcLNK2.cs b/ArcFormats/Ail/ArcLNK2.cs
new file mode 100644
index 00000000..c81cc04d
--- /dev/null
+++ b/ArcFormats/Ail/ArcLNK2.cs
@@ -0,0 +1,58 @@
+//! \file       ArcLNK2.cs
+//! \date       2018 Jan 04
+//! \brief      Ail resource archive.
+//
+// Copyright (C) 2018 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;
+
+namespace GameRes.Formats.Ail
+{
+    [Export(typeof(ArchiveFormat))]
+    public class Lnk2Opener : DatOpener
+    {
+        public override string         Tag { get { return "DAT/LNK2"; } }
+        public override string Description { get { return "Ail resource archive"; } }
+        public override uint     Signature { get { return 0x324B4E4C; } } // 'LNK2'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public Lnk2Opener ()
+        {
+            Extensions = new string[] { "dat" };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (4)*2;
+            if (!IsSaneCount (count))
+                return null;
+            var dir = ReadIndex (file, 8, count);
+            if (null == dir)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+    }
+}
diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index fc2d457f..cf3e8ab6 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -81,6 +81,7 @@
     <Compile Include="Actgs\ArcDAT.cs" />
     <Compile Include="AdvSys\ArcAdvSys3.cs" />
     <Compile Include="AdvSys\ImageGWD.cs" />
+    <Compile Include="Ail\ArcLNK2.cs" />
     <Compile Include="AliceSoft\ArcAAR.cs" />
     <Compile Include="AliceSoft\ArcAFA.cs" />
     <Compile Include="AliceSoft\ArcALK.cs" />
@@ -506,7 +507,7 @@
     <Compile Include="AdvSys\ArcAdvSysT.cs" />
     <Compile Include="Cri\ArcAFS.cs" />
     <Compile Include="elf\ArcAi5Win.cs" />
-    <Compile Include="ArcAil.cs" />
+    <Compile Include="Ail\ArcAil.cs" />
     <Compile Include="AliceSoft\ArcALD.cs" />
     <Compile Include="Amaterasu\ArcAMI.cs" />
     <Compile Include="Lilim\ArcAOS.cs" />
@@ -1003,7 +1004,9 @@
     </EmbeddedResource>
     <EmbeddedResource Include="Strings\arcStrings.ru-RU.resx" />
   </ItemGroup>
-  <ItemGroup />
+  <ItemGroup>
+    <Folder Include="Bonk\" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>perl "$(SolutionDir)inc-revision.pl" "$(ProjectPath)" $(ConfigurationName)