diff --git a/Sources/Data/EF/Dice/ColorDieEntity.cs b/Sources/Data/EF/Dice/ColorDieEntity.cs
index 877914a..a062808 100644
--- a/Sources/Data/EF/Dice/ColorDieEntity.cs
+++ b/Sources/Data/EF/Dice/ColorDieEntity.cs
@@ -1,16 +1,9 @@
 using Data.EF.Dice.Faces;
-using Model.Dice.Faces;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Data.EF.Dice
 {
-    public class ColorDieEntity
+    public class ColorDieEntity : DieEntity
     {
-        public Guid Id { get; set; }
-        public ICollection<ColorFaceEntity> Faces { get; set; }
+        public new ICollection<ColorFaceEntity> Faces { get; set; }
     }
 }
diff --git a/Sources/Data/EF/Dice/DieEntity.cs b/Sources/Data/EF/Dice/DieEntity.cs
new file mode 100644
index 0000000..31a4167
--- /dev/null
+++ b/Sources/Data/EF/Dice/DieEntity.cs
@@ -0,0 +1,19 @@
+using Data.EF.Dice.Faces;
+using Data.EF.Games;
+using Data.EF.Joins;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Data.EF.Dice
+{
+    /// <summary>
+    /// not designed to be instantiated, but not abstract in order to allow extensions
+    /// </summary>
+    /// 
+    public class DieEntity
+    {
+        public Guid ID { get; set; }
+        public ICollection<TurnEntity> Turns { get; set; } // many to many
+        public List<DieTurn> DieTurns { get; set; }
+        public ICollection<FaceEntity> Faces { get; set; } // one to many
+    }
+}
diff --git a/Sources/Data/EF/Dice/Faces/ColorFaceEntity.cs b/Sources/Data/EF/Dice/Faces/ColorFaceEntity.cs
index 550ae64..d28e6d0 100644
--- a/Sources/Data/EF/Dice/Faces/ColorFaceEntity.cs
+++ b/Sources/Data/EF/Dice/Faces/ColorFaceEntity.cs
@@ -1,20 +1,15 @@
-using Model.Dice;
-using System;
-using System.ComponentModel.DataAnnotations.Schema;
-using System.Drawing;
+using System.Drawing;
 
 namespace Data.EF.Dice.Faces
 {
-    public class ColorFaceEntity
+    public class ColorFaceEntity : FaceEntity
     {
-        public Guid ID { get; set; }
-
         public byte A { get; set; }
         public byte R { get; set; }
         public byte G { get; set; }
         public byte B { get; set; }
 
-        [ForeignKey("ColorDieFK")]
+        public Guid ColorDieEntityID { get; set; }
         public ColorDieEntity ColorDieEntity { get; set; }
 
         public void SetValue(Color c)
diff --git a/Sources/Data/EF/Dice/Faces/FaceEntity.cs b/Sources/Data/EF/Dice/Faces/FaceEntity.cs
new file mode 100644
index 0000000..312e0c2
--- /dev/null
+++ b/Sources/Data/EF/Dice/Faces/FaceEntity.cs
@@ -0,0 +1,15 @@
+using Data.EF.Games;
+using Data.EF.Joins;
+
+namespace Data.EF.Dice.Faces
+{
+    /// <summary>
+    /// not designed to be instantiated, but not abstract in order to allow extensions
+    /// </summary>
+    public class FaceEntity
+    {
+        public Guid ID { get; set; }
+        public ICollection<TurnEntity> Turns { get; set; } // many to many
+        public List<FaceTurn> FaceTurns { get; set; }
+    }
+}
diff --git a/Sources/Data/EF/Dice/Faces/ImageFaceEntity.cs b/Sources/Data/EF/Dice/Faces/ImageFaceEntity.cs
index 3d29656..7227868 100644
--- a/Sources/Data/EF/Dice/Faces/ImageFaceEntity.cs
+++ b/Sources/Data/EF/Dice/Faces/ImageFaceEntity.cs
@@ -1,19 +1,9 @@
-using Model.Dice;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations.Schema;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Data.EF.Dice.Faces
+namespace Data.EF.Dice.Faces
 {
-    public class ImageFaceEntity
+    public class ImageFaceEntity : FaceEntity
     {
-        public Guid ID { get; set; }
         public string Value { get; set; }
-
-        [ForeignKey("ImgDieFK")]
+        public Guid ImageDieEntityID { get; set; }
         public ImageDieEntity ImageDieEntity { get; set; }
     }
 }
diff --git a/Sources/Data/EF/Dice/Faces/NumberFaceEntity.cs b/Sources/Data/EF/Dice/Faces/NumberFaceEntity.cs
index 2895633..862f333 100644
--- a/Sources/Data/EF/Dice/Faces/NumberFaceEntity.cs
+++ b/Sources/Data/EF/Dice/Faces/NumberFaceEntity.cs
@@ -1,19 +1,9 @@
-using Model.Dice;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations.Schema;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Data.EF.Dice.Faces
+namespace Data.EF.Dice.Faces
 {
-    public class NumberFaceEntity
+    public class NumberFaceEntity : FaceEntity
     {
-        public Guid Id { get; set; }
         public int Value { get; set; }
-
-        [ForeignKey("NumDieFK")]
+        public Guid NumberDieEntityID { get; set; }
         public NumberDieEntity NumberDieEntity { get; set; }
     }
 }
diff --git a/Sources/Data/EF/Dice/ImageDieEntity.cs b/Sources/Data/EF/Dice/ImageDieEntity.cs
index 2b379ef..f1295ab 100644
--- a/Sources/Data/EF/Dice/ImageDieEntity.cs
+++ b/Sources/Data/EF/Dice/ImageDieEntity.cs
@@ -1,16 +1,9 @@
 using Data.EF.Dice.Faces;
-using Model.Dice.Faces;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Data.EF.Dice
 {
-    public class ImageDieEntity
+    public class ImageDieEntity : DieEntity
     {
-        public Guid Id { get; set; }
-        public ICollection<ImageFaceEntity> Faces { get; set; }
+        public new ICollection<ImageFaceEntity> Faces { get; set; }
     }
 }
diff --git a/Sources/Data/EF/Dice/NumberDieEntity.cs b/Sources/Data/EF/Dice/NumberDieEntity.cs
index 27b1d21..c3908fe 100644
--- a/Sources/Data/EF/Dice/NumberDieEntity.cs
+++ b/Sources/Data/EF/Dice/NumberDieEntity.cs
@@ -1,16 +1,9 @@
 using Data.EF.Dice.Faces;
-using Model.Dice.Faces;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Data.EF.Dice
 {
-    public class NumberDieEntity
+    public class NumberDieEntity : DieEntity
     {
-        public Guid Id { get; set; }
-        public ICollection<NumberFaceEntity> Faces { get; set; }
+        public new ICollection<NumberFaceEntity> Faces { get; set; }
     }
 }