diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index d7ac7b05..b7170156 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -117,6 +117,8 @@
     <Compile Include="DirectDraw\DxtDecoder.cs" />
     <Compile Include="elf\ArcAi5DAT.cs" />
     <Compile Include="elf\ImageRMT.cs" />
+    <Compile Include="Otemoto\ArcTLZ.cs" />
+    <Compile Include="Otemoto\ImageMAG.cs" />
     <Compile Include="ExHibit\ArcGRP.cs" />
     <Compile Include="Foster\ArcC24.cs" />
     <Compile Include="Foster\ArcFA2.cs" />
@@ -150,6 +152,7 @@
     <Compile Include="MicroVision\ArcGSD.cs" />
     <Compile Include="MicroVision\AudioIKM.cs" />
     <Compile Include="MicroVision\ImageGPC.cs" />
+    <Compile Include="Morning\ArcPAK.cs" />
     <Compile Include="Qlie\DelphiDeserializer.cs" />
     <Compile Include="Qlie\Encryption.cs" />
     <Compile Include="RealLive\ArcKOE.cs" />
@@ -422,6 +425,7 @@
     <Compile Include="SysD\ArcDPK.cs" />
     <Compile Include="SysD\AudioDWV.cs" />
     <Compile Include="SysD\ImageDBM.cs" />
+    <Compile Include="Tactics\ArcYU.cs" />
     <Compile Include="Tactics\WidgetTactics.xaml.cs">
       <DependentUpon>WidgetTactics.xaml</DependentUpon>
     </Compile>
diff --git a/ArcFormats/Morning/ArcPAK.cs b/ArcFormats/Morning/ArcPAK.cs
new file mode 100644
index 00000000..57f8575b
--- /dev/null
+++ b/ArcFormats/Morning/ArcPAK.cs
@@ -0,0 +1,118 @@
+//! \file       ArcPAK.cs
+//! \date       2017 Dec 26
+//! \brief      Morning encrypted resource 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.Diagnostics;
+using System.IO;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Morning
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PakOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "PAK/MORNING"; } }
+        public override string Description { get { return "Morning encrypted resource archive"; } }
+        public override uint     Signature { get { return 0x58668F8B; } }
+        public override bool  IsHierarchic { get { return true; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            uint block_count = file.View.ReadUInt32 (4);
+            var key = QueryKey (file.Name);
+            if (null == key)
+                return null;
+            var index = file.View.ReadBytes (8, block_count * 0x200u);
+            DecryptIndex (index, key);
+
+            var dir = new List<Entry>();
+            int block_offset = 0;
+            for (uint i = 0; i < block_count; ++i)
+            {
+                int count = index.ToInt32 (block_offset);
+                if (!IsSaneCount (count))
+                    return null;
+                int current_entry = block_offset + 4;
+                for (int j = 0; j < count; ++j)
+                {
+                    int name_offset = index.ToInt32 (current_entry);
+                    var name = Binary.GetCString (index, block_offset + name_offset);
+                    var entry = FormatCatalog.Instance.Create<Entry> (name);
+                    entry.Offset = index.ToUInt32 (current_entry+4);
+                    entry.Size   = index.ToUInt32 (current_entry+8);
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                    current_entry += 12;
+                }
+                block_offset += 0x200;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        static readonly byte[] PngHeader = { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
+        static readonly byte[] PngIHdr   = { 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52 };
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            if (entry.Size <= 8 || !arc.File.View.BytesEqual (entry.Offset, PngIHdr))
+                return base.OpenEntry (arc, entry);
+            Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
+            return new PrefixStream (PngHeader, input);
+        }
+
+        void DecryptIndex (byte[] data, byte[] key)
+        {
+            int index_mask = key.Length-1;
+            Debug.Assert ((key.Length & index_mask) == 0);
+            for (int i = 0; i < data.Length; ++i)
+            {
+                data[i] ^= key[i & index_mask];
+            }
+        }
+
+        byte[] QueryKey (string arc_name)
+        {
+            return DefaultScheme.DefaultKey;
+        }
+
+        MorningScheme DefaultScheme = new MorningScheme();
+
+        public override ResourceScheme Scheme
+        {
+            get { return DefaultScheme; }
+            set { DefaultScheme = (MorningScheme)value; }
+        }
+    }
+
+    [Serializable]
+    public class MorningScheme : ResourceScheme
+    {
+        public byte[] DefaultKey;
+    }
+}