diff --git a/ArcFormats/uGOS/ImageTXT.cs b/ArcFormats/uGOS/ImageTXT.cs
new file mode 100644
index 00000000..2ff40a27
--- /dev/null
+++ b/ArcFormats/uGOS/ImageTXT.cs
@@ -0,0 +1,144 @@
+//! \file       ImageTXT.cs
+//! \date       2018 Dec 13
+//! \brief      μ-GameOperationSystem tiled bitmap.
+//
+// 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;
+using System.Text.RegularExpressions;
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+
+namespace GameRes.Formats.uGOS
+{
+    internal class TxtMetaData : ImageMetaData
+    {
+        public IEnumerable<Tile> Tiles;
+    }
+
+    internal class Tile
+    {
+        public string   FileName;
+        public int  X;
+        public int  Y;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class TxtFormat : ImageFormat
+    {
+        public override string         Tag { get { return "TXT/uGOS"; } }
+        public override string Description { get { return "μ-GameOperationSystem tiled bitmap"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public TxtFormat ()
+        {
+            Extensions = Array.Empty<string>();
+        }
+
+        static readonly Regex HeaderRe = new Regex (@"^\s*(\d+),\s*(\d+),\s*(\d+)$");
+        static readonly Regex TileRe   = new Regex (@"^.+@(\d+),(\d+)\..*$");
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            if (file.Length > 0x1000 || !file.Name.HasExtension (".txt"))
+                return null;
+            using (var input = new StreamReader (file.AsStream, Encodings.cp932, true))
+            {
+                var header = input.ReadLine();
+                if (string.IsNullOrEmpty (header))
+                    return null;
+                var match = HeaderRe.Match (header);
+                if (!match.Success)
+                    return null;
+                uint width  = UInt32.Parse (match.Groups[1].Value);
+                uint height = UInt32.Parse (match.Groups[2].Value);
+                int tile_size = Int32.Parse (match.Groups[3].Value);
+                if (tile_size <= 0)
+                    return null;
+                var tiles = new List<Tile>();
+                string line;
+                while ((line = input.ReadLine()) != null)
+                {
+                    match = TileRe.Match (line);
+                    if (!match.Success)
+                        return null;
+                    int x = Int32.Parse (match.Groups[2].Value);
+                    int y = Int32.Parse (match.Groups[1].Value);
+                    var tile = new Tile {
+                        FileName = match.Groups[0].Value,
+                        X = x * tile_size,
+                        Y = y * tile_size,
+                    };
+                    tiles.Add (tile);
+                }
+                if (0 == tiles.Count)
+                    return null;
+                return new TxtMetaData {
+                    Width = width,
+                    Height = height,
+                    BPP = 32,
+                    Tiles = tiles,
+                };
+            }
+        }
+
+        static readonly ResourceInstance<ImageFormat> DetFormat = new ResourceInstance<ImageFormat> ("BMP/uGOS");
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var meta = (TxtMetaData)info;
+            var bitmap = new WriteableBitmap (meta.iWidth, meta.iHeight, ImageData.DefaultDpiX,
+                                              ImageData.DefaultDpiY, PixelFormats.Bgra32, null);
+            var dir = VFS.GetDirectoryName (meta.FileName);
+            foreach (var tile in meta.Tiles)
+            {
+                var filename = VFS.CombinePath (dir, tile.FileName);
+                using (var input = VFS.OpenBinaryStream (filename))
+                {
+                    var tile_info = DetFormat.Value.ReadMetaData (input) as DetBmpMetaData;
+                    if (null == tile_info)
+                        throw new InvalidFormatException ("Invalid uGOS tile bitmap.");
+                    if (tile.X >= meta.iWidth || tile.Y >= meta.iHeight)
+                        continue;
+                    var reader = new DetBmpFormat.Reader (input, tile_info);
+                    reader.Unpack();
+                    int width = Math.Min (tile_info.iWidth, meta.iWidth - tile.X);
+                    int height = Math.Min (tile_info.iHeight, meta.iHeight - tile.Y);
+                    var src_rect = new Int32Rect (0, 0, width, height);
+                    bitmap.WritePixels (src_rect, reader.Data, reader.Stride, tile.X, tile.Y);
+                }
+            }
+            var flipped = new TransformedBitmap (bitmap, new ScaleTransform { ScaleY = -1 });
+            flipped.Freeze();
+            return new ImageData (flipped, meta);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("TxtFormat.Write not implemented");
+        }
+    }
+}