diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index a9789f60..34b15631 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -88,6 +88,7 @@
     <Compile Include="ArcGameDat.cs" />
     <Compile Include="ArcGSP.cs" />
     <Compile Include="ArcGsPack.cs" />
+    <Compile Include="ArcIFL.cs" />
     <Compile Include="ArcInnGrey.cs" />
     <Compile Include="ArcINT.cs" />
     <Compile Include="ArcISA.cs" />
@@ -191,6 +192,7 @@
     <Compile Include="ImageGRP.cs" />
     <Compile Include="ImageHG3.cs" />
     <Compile Include="ImageIAF.cs" />
+    <Compile Include="ImageIGF.cs" />
     <Compile Include="ImageISG.cs" />
     <Compile Include="ImageKAAS.cs" />
     <Compile Include="ImageMAI.cs" />
diff --git a/ArcFormats/ImageIGF.cs b/ArcFormats/ImageIGF.cs
new file mode 100644
index 00000000..b64a2fea
--- /dev/null
+++ b/ArcFormats/ImageIGF.cs
@@ -0,0 +1,114 @@
+//! \file       ImageIGF.cs
+//! \date       Sun Jun 28 00:13:01 2015
+//! \brief      Silky's compressed image format.
+//
+// Copyright (C) 2015 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.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Silky
+{
+    internal class IgfMetaData : ImageMetaData
+    {
+        public int  UnpackedSize;
+        public bool IsPacked;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class IgfFormat : ImageFormat
+    {
+        public override string         Tag { get { return "IGF"; } }
+        public override string Description { get { return "Silky's image format"; } }
+        public override uint     Signature { get { return 0x5355455Au; } } // 'ZEUS'
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            var header = new byte[0x14];
+            if (header.Length != stream.Read (header, 0, header.Length))
+                return null;
+            uint width  = LittleEndian.ToUInt32 (header, 4);
+            uint height = LittleEndian.ToUInt32 (header, 8);
+            int unpacked_size  = LittleEndian.ToInt32 (header, 0xC);
+            int flags = LittleEndian.ToInt32 (header, 0x10);
+            int bpp = flags & 0xff;
+            if (0 == bpp)
+                bpp = 32;
+            return new IgfMetaData
+            {
+                Width = width,
+                Height = height,
+                BPP = bpp,
+                UnpackedSize = unpacked_size,
+                IsPacked = 0 != (flags & 0x80000000),
+            };
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            var meta = info as IgfMetaData;
+            if (null == meta)
+                throw new ArgumentException ("IgfFormat.Read should be supplied with IgfMetaData", "info");
+
+            int stride = (int)info.Width*info.BPP/8;
+            stream.Position = 0x14;
+            byte[] pixels;
+            if (meta.IsPacked)
+            {
+                int in_size = (int)(stream.Length - 0x14);
+                using (var lzss = new LzssReader (stream, in_size, meta.UnpackedSize))
+                {
+                    lzss.FrameFill = 0x20;
+                    lzss.Unpack();
+                    pixels = lzss.Data;
+                }
+            }
+            else
+            {
+                pixels = new byte[info.Height*stride];
+                if (pixels.Length != stream.Read (pixels, 0, pixels.Length))
+                    throw new InvalidFormatException ("Unexpected end of file");
+            }
+            PixelFormat format;
+            if (24 == info.BPP)
+                format = PixelFormats.Bgr24;
+            else if (32 == info.BPP)
+                format = PixelFormats.Bgra32;
+            else
+                format = PixelFormats.Gray8;
+            var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height,
+                ImageData.DefaultDpiX, ImageData.DefaultDpiY, format, null, pixels, stride);
+            var flipped = new TransformedBitmap (bitmap, new ScaleTransform { ScaleY = -1 });
+            flipped.Freeze();
+            return new ImageData (flipped, info);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new NotImplementedException ("IgfFormat.Write not implemented");
+        }
+    }
+}
diff --git a/ArcFormats/Properties/AssemblyInfo.cs b/ArcFormats/Properties/AssemblyInfo.cs
index ebe0e03b..3487297b 100644
--- a/ArcFormats/Properties/AssemblyInfo.cs
+++ b/ArcFormats/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion ("1.0.7.70")]
-[assembly: AssemblyFileVersion ("1.0.7.70")]
+[assembly: AssemblyVersion ("1.0.7.71")]
+[assembly: AssemblyFileVersion ("1.0.7.71")]
diff --git a/supported.html b/supported.html
index cd7dc32b..74ce43da 100644
--- a/supported.html
+++ b/supported.html
@@ -133,11 +133,13 @@ Chikatetsu Fuusa Jiken<br/>
 <tr class="odd"><td>*.ald</td><td>-</td><td>No</td><td rowspan="2">Alice Soft</td><td rowspan="2">Tsuma Shibori</td></tr>
 <tr class="odd"><td>*.qnt</td><td><tt>QNT</tt></td><td>No</td></tr>
 <tr><td>*.pd<br/>*.pb</td><td>-</td><td>No</td><td>Discovery</td><td>Tsuma Tsuma</td></tr>
-<tr class="odd"><td>*.ifl</td><td>IFLS</td><td>No</td><td rowspan="2">Silky's</td><td rowspan="2">
+<tr class="odd"><td>*.ifl</td><td>IFLS</td><td>No</td><td rowspan="3">Silky's</td><td rowspan="3">
 Flutter of Birds<br/>
+Flutter of Birds II<br/>
 Nikutai Ten'i<br/>
 </td></tr>
 <tr class="odd"><td>*.grd</td><td><tt>CMP_</tt></td><td>No</td></tr>
+<tr class="odd"><td>*.igf</td><td><tt>ZEUS</tt></td><td>No</td></tr>
 <tr><td>*.dat<br/>*.arc</td><td>-<br/><tt>M2TYPE</tt></td><td>No</td><td rowspan="2">FFA System/G-SYS</td><td rowspan="2">
 Dokusen Kango<br/>
 Inran OL Sawatari Tokiko<br/>