diff --git a/OpenKh.Bbs/Ctd.cs b/OpenKh.Bbs/Ctd.cs
new file mode 100644
index 000000000..5c5c982ec
--- /dev/null
+++ b/OpenKh.Bbs/Ctd.cs
@@ -0,0 +1,81 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Xe.BinaryMapper;
+
+namespace OpenKh.Bbs
+{
+    public class Ctd
+    {
+        private const int MagicCode = 0x44544340;
+
+        private class Header
+        {
+            [Data] public int MagicCode { get; set; }
+            [Data] public int Version { get; set; }
+            [Data] public short Unknown08 { get; set; }
+            [Data] public short Unknown0a { get; set; }
+            [Data] public short Entry2Count { get; set; }
+            [Data] public short Entry1Count { get; set; }
+            [Data] public int Entry1Offset { get; set; }
+            [Data] public int Entry2Offset { get; set; }
+            [Data] public int TextOffset { get; set; }
+            [Data] public int Unknown1c { get; set; }
+        }
+
+        public class Entry
+        {
+            public short Unknown00 { get; set; }
+            public short Unknown02 { get; set; }
+            public int Unknown04 { get; set; }
+            public int Unknown08 { get; set; }
+        }
+
+        public class Entry2
+        {
+            [Data] public ushort textX { get; set; }
+            [Data] public ushort textY { get; set; }
+            [Data] public ushort winW { get; set; }
+            [Data] public ushort winH { get; set; }
+            [Data] public byte formatType1 { get; set; }
+            [Data] public byte dialogType { get; set; }
+            [Data] public byte formatType2 { get; set; }
+            [Data] public byte unk1 { get; set; }
+            [Data] public ushort fontSize { get; set; }
+            [Data] public ushort unk2 { get; set; }
+            [Data] public ushort fontSeparation { get; set; } // NOT TESTED
+            [Data] public ushort unk3 { get; set; }
+            [Data] public ushort unk4 { get; set; }
+            [Data] public ushort unk5 { get; set; }
+            [Data] public ushort unk6 { get; set; }
+            [Data] public ushort color { get; set; }
+            [Data] public ushort unk7 { get; set; }
+            [Data] public ushort unk8 { get; set; }
+        }
+
+        private readonly Header _header;
+
+        public List<Entry> Entries1 { get; set; }
+        public List<Entry2> Entries2 { get; set; }
+
+        private Ctd(Stream stream)
+        {
+            _header = BinaryMapping.ReadObject<Header>(stream);
+
+            stream.Position = _header.Entry1Offset;
+            Entries1 = Enumerable.Range(0, _header.Entry1Count)
+                .Select(x => BinaryMapping.ReadObject<Entry>(stream))
+                .ToList();
+
+            stream.Position = _header.Entry2Offset;
+            Entries2 = Enumerable.Range(0, _header.Entry2Count)
+                .Select(x => BinaryMapping.ReadObject<Entry2>(stream))
+                .ToList();
+        }
+
+        public static Ctd Read(Stream stream) => new Ctd(stream);
+
+        public static bool IsValid(Stream stream) =>
+            new BinaryReader(stream).ReadInt32() == MagicCode;
+    }
+}
diff --git a/OpenKh.Tests/Bbs/CtdTests.cs b/OpenKh.Tests/Bbs/CtdTests.cs
new file mode 100644
index 000000000..d0a1855ab
--- /dev/null
+++ b/OpenKh.Tests/Bbs/CtdTests.cs
@@ -0,0 +1,53 @@
+using OpenKh.Bbs;
+using System.IO;
+using Xunit;
+
+namespace OpenKh.Tests.Bbs
+{
+    public class CtdTests : Common
+    {
+        private static readonly string FileName = "Bbs/res/ctdtest.ctd";
+
+        [Fact]
+        public void IsValidTest()
+        {
+            using (var stream = new MemoryStream())
+            {
+                stream.WriteByte(0x40);
+                stream.WriteByte(0x43);
+                stream.WriteByte(0x54);
+                stream.WriteByte(0x44);
+                stream.Position = 0;
+                Assert.True(Ctd.IsValid(stream));
+            }
+        }
+
+        [Fact]
+        public void IsNotValidTest()
+        {
+            using (var stream = new MemoryStream())
+            {
+                stream.WriteByte(1);
+                stream.WriteByte(2);
+                stream.WriteByte(3);
+                stream.WriteByte(4);
+                stream.Position = 0;
+                Assert.False(Ctd.IsValid(stream));
+            }
+        }
+
+        [Fact]
+        public void ReadCorrectAmountOfEntry1() => FileOpenRead(FileName, stream =>
+        {
+            var ctd = Ctd.Read(stream);
+            Assert.Equal(41, ctd.Entries1.Count);
+        });
+
+        [Fact]
+        public void ReadCorrectAmountOfEntry2() => FileOpenRead(FileName, stream =>
+        {
+            var ctd = Ctd.Read(stream);
+            Assert.Equal(14, ctd.Entries2.Count);
+        });
+    }
+}
diff --git a/OpenKh.Tests/Bbs/res/ctdtest.ctd b/OpenKh.Tests/Bbs/res/ctdtest.ctd
new file mode 100644
index 000000000..d9d37234b
Binary files /dev/null and b/OpenKh.Tests/Bbs/res/ctdtest.ctd differ
diff --git a/OpenKh.Tests/OpenKh.Tests.csproj b/OpenKh.Tests/OpenKh.Tests.csproj
index 9369951fb..9c95becad 100644
--- a/OpenKh.Tests/OpenKh.Tests.csproj
+++ b/OpenKh.Tests/OpenKh.Tests.csproj
@@ -38,6 +38,9 @@
     <None Update="Imaging\res\image-8bit-512-272.tm2">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <None Update="Bbs\res\ctdtest.ctd">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
     <None Update="kh2\res\00objentry.bin">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>