diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index d9dff18b..befc34bc 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -143,6 +143,7 @@
     <Compile Include="rUGP\AudioRHA.cs" />
     <Compile Include="Lilim\ArcFGA.cs" />
     <Compile Include="ScenePlayer\ArcPMX.cs" />
+    <Compile Include="Scoop\ArcGX.cs" />
     <Compile Include="Silky\ImageGRD.cs" />
     <Compile Include="Slg\ArcSPD.cs" />
     <Compile Include="Software House Parsley\ArcCG.cs" />
@@ -616,7 +617,7 @@
     <Compile Include="Zyx\ArcBDF.cs" />
     <Compile Include="Zyx\ImageSPL.cs" />
     <EmbeddedResource Include="Strings\arcStrings.zh-Hans.resx" />
-    <None Include="Seraphim\ArcSeraph.cs" />
+    <Compile Include="Seraphim\ArcSeraph.cs" />
     <Compile Include="ArcSPack.cs" />
     <Compile Include="NitroPlus\ArcSteinsGate.cs" />
     <Compile Include="Triangle\ArcSUD.cs" />
diff --git a/ArcFormats/Scoop/ArcGX.cs b/ArcFormats/Scoop/ArcGX.cs
new file mode 100644
index 00000000..853484dd
--- /dev/null
+++ b/ArcFormats/Scoop/ArcGX.cs
@@ -0,0 +1,90 @@
+//! \file       ArcGX.cs
+//! \date       2017 Nov 25
+//! \brief      Scoop 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.IO;
+using GameRes.Compression;
+
+namespace GameRes.Formats.Scoop
+{
+    [Export(typeof(ArchiveFormat))]
+    public class GxOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "GX"; } }
+        public override string Description { get { return "Scoop resource archive"; } }
+        public override uint     Signature { get { return 0x52524150; } } // 'PARR'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public GxOpener ()
+        {
+            Extensions = new string[] { "gx", "fx", "vx" };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.View.AsciiEqual (0, "PARROT1.0"))
+                return null;
+            int count = file.View.ReadInt16 (0xA);
+            if (!IsSaneCount (count))
+                return null;
+            uint index_size = file.View.ReadUInt32 (0xC);
+            if (index_size > file.View.Reserve (0, index_size))
+                return null;
+
+            uint index_offset = 0x10;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                int compression = file.View.ReadUInt16 (index_offset);
+                uint name_offset = file.View.ReadUInt32 (index_offset+2);
+                if (name_offset > index_size)
+                    return null;
+                var name = file.View.ReadString (name_offset, index_size - name_offset);
+                var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
+                entry.Offset = file.View.ReadUInt32 (index_offset+6);
+                entry.Size   = file.View.ReadUInt32 (index_offset+0xA);
+                entry.UnpackedSize = file.View.ReadUInt32 (index_offset+0xE);
+                entry.IsPacked = compression > 1;
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 0x12;
+            }
+            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)
+                return input;
+            return new ZLibStream (input, CompressionMode.Decompress);
+        }
+    }
+}