diff --git a/LibCmo/CK2/CKContext.cpp b/LibCmo/CK2/CKContext.cpp
index 0a28495..4088707 100644
--- a/LibCmo/CK2/CKContext.cpp
+++ b/LibCmo/CK2/CKContext.cpp
@@ -57,7 +57,7 @@ namespace LibCmo::CK2 {
 		}
 
 		// create one
-		ObjImpls::CKObject* obj = desc->CreationFct(this, decided_id, name);
+		ObjImpls::CKObject* obj = desc->CreationFct(this, decided_id + c_ObjectIdOffset, name);
 
 		// put into slot
 		m_ObjectsList[decided_id] = obj;
@@ -67,6 +67,7 @@ namespace LibCmo::CK2 {
 	}
 
 	ObjImpls::CKObject* CKContext::GetObject(CK_ID id) {
+		id -= c_ObjectIdOffset;
 		if (id >= m_ObjectsList.size()) return nullptr;
 		return m_ObjectsList[id];
 	}
@@ -89,6 +90,7 @@ namespace LibCmo::CK2 {
 		desc->ReleaseFct(ctx, obj);
 	}
 	void CKContext::DestroyObject(CK_ID id) {
+		id -= c_ObjectIdOffset;
 		if (id >= m_ObjectsList.size()) return;
 
 		// get object and free it
diff --git a/LibCmo/CK2/CKContext.hpp b/LibCmo/CK2/CKContext.hpp
index 4fa3c6e..f754d88 100644
--- a/LibCmo/CK2/CKContext.hpp
+++ b/LibCmo/CK2/CKContext.hpp
@@ -97,6 +97,13 @@ namespace LibCmo::CK2 {
 	protected:
 		// ========== Objects Management ==========
 
+		/**
+		 * The global offset of created CK_ID.
+		 * The value close to zero may cause some issue.
+		 * So we add a static offset to every created CK_ID.
+		*/
+		const CK_ID c_ObjectIdOffset = 61u;
+
 		XContainer::XArray<ObjImpls::CKObject*> m_ObjectsList;
 		std::deque<CK_ID> m_ReturnedObjectIds;
 
diff --git a/LibCmo/CK2/CKGlobals.cpp b/LibCmo/CK2/CKGlobals.cpp
index 70aff57..82755bc 100644
--- a/LibCmo/CK2/CKGlobals.cpp
+++ b/LibCmo/CK2/CKGlobals.cpp
@@ -14,6 +14,9 @@
 #include "ObjImpls/CKSceneObject.hpp"
 #include "ObjImpls/CKBeObject.hpp"
 #include "ObjImpls/CKGroup.hpp"
+#include "ObjImpls/CKRenderObject.hpp"
+#include "ObjImpls/CK3dEntity.hpp"
+#include "ObjImpls/CK3dObject.hpp"
 
 namespace LibCmo::CK2 {
 
@@ -222,11 +225,9 @@ CKClassRegister(cid, parentCid, \
 		EasyClassReg(ObjImpls::CKSceneObject, CK_CLASSID::CKCID_SCENEOBJECT, CK_CLASSID::CKCID_OBJECT, "Scene Object");
 		EasyClassReg(ObjImpls::CKBeObject, CK_CLASSID::CKCID_BEOBJECT, CK_CLASSID::CKCID_SCENEOBJECT, "Behavioral Object");
 		EasyClassReg(ObjImpls::CKGroup, CK_CLASSID::CKCID_GROUP, CK_CLASSID::CKCID_BEOBJECT, "Group");
-
-		//CKClassRegister(CK_CLASSID::CKCID_OBJECT, CK_CLASSID::CKCID_OBJECT,
-		//	[](CKContext* ctx, CK_ID id, CKSTRING name) -> ObjImpls::CKObject* { return new ObjImpls::CKObject(ctx, id, name); },
-		//	[](CKContext* ctx, ObjImpls::CKObject* obj) -> void { delete obj; },
-		//	[]() -> CKSTRING { return "Basic Object"; });
+		EasyClassReg(ObjImpls::CKRenderObject, CK_CLASSID::CKCID_RENDEROBJECT, CK_CLASSID::CKCID_BEOBJECT, "Render Object");
+		EasyClassReg(ObjImpls::CK3dEntity, CK_CLASSID::CKCID_3DENTITY, CK_CLASSID::CKCID_RENDEROBJECT, "3D Entity");
+		EasyClassReg(ObjImpls::CK3dObject, CK_CLASSID::CKCID_3DOBJECT, CK_CLASSID::CKCID_3DENTITY, "3D Object");
 
 #undef EasyClassReg
 
diff --git a/LibCmo/CK2/CKStateChunk.cpp b/LibCmo/CK2/CKStateChunk.cpp
index 55c992f..a645a61 100644
--- a/LibCmo/CK2/CKStateChunk.cpp
+++ b/LibCmo/CK2/CKStateChunk.cpp
@@ -565,6 +565,7 @@ namespace LibCmo::CK2 {
 		CKDWORD size_in_dword = this->GetCeilDwordSize(size_in_byte);
 		if (this->EnsureReadSpace(size_in_dword)) {
 			std::memcpy(data_ptr, this->m_pData + this->m_Parser.m_CurrentPos, size_in_byte);
+			this->m_Parser.m_CurrentPos += size_in_dword;
 			return true;
 		} else {
 			// failed, report to context
diff --git a/LibCmo/CK2/ObjImpls/CK3dEntity.cpp b/LibCmo/CK2/ObjImpls/CK3dEntity.cpp
new file mode 100644
index 0000000..5dfa551
--- /dev/null
+++ b/LibCmo/CK2/ObjImpls/CK3dEntity.cpp
@@ -0,0 +1,20 @@
+#include "CK3dEntity.hpp"
+#include "../CKStateChunk.hpp"
+
+namespace LibCmo::CK2::ObjImpls {
+
+	bool CK3dEntity::Save(CKStateChunk* chunk, CKFileVisitor* file, CKDWORD flags) {
+		bool suc = CKRenderObject::Save(chunk, file, flags);
+		if (!suc) return false;
+
+		return true;
+	}
+
+	bool CK3dEntity::Load(CKStateChunk* chunk, CKFileVisitor* file) {
+		bool suc = CKRenderObject::Load(chunk, file);
+		if (!suc) return false;
+
+		return true;
+	}
+
+}
diff --git a/LibCmo/CK2/ObjImpls/CK3dEntity.hpp b/LibCmo/CK2/ObjImpls/CK3dEntity.hpp
new file mode 100644
index 0000000..f9ac37d
--- /dev/null
+++ b/LibCmo/CK2/ObjImpls/CK3dEntity.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "../../VTAll.hpp"
+#include "CKRenderObject.hpp"
+
+namespace LibCmo::CK2::ObjImpls {
+
+	class CK3dEntity : public CKRenderObject {
+	public:
+		CK3dEntity(CKContext* ctx, CK_ID ckid, CKSTRING name) : 
+			CKRenderObject(ctx, ckid, name),
+			m_Meshes(), m_CurrentMesh(nullptr), m_WorldMatrix()
+		{}
+		virtual ~CK3dEntity() {}
+		LIBCMO_DISABLE_COPY_MOVE(CK3dEntity);
+
+		virtual CK_CLASSID GetClassID(void) override { 
+			return CK_CLASSID::CKCID_3DENTITY; 
+		}
+		//virtual void PreSave(CKFileVisitor* file, CKDWORD flags) override;
+		virtual bool Save(CKStateChunk* chunk, CKFileVisitor* file, CKDWORD flags) override;
+		virtual bool Load(CKStateChunk* chunk, CKFileVisitor* file) override;
+		//virtual void PostLoad() override;
+
+	protected:
+		XContainer::XObjectPointerArray m_Meshes;
+		CKMesh* m_CurrentMesh;
+		VxMath::VxMatrix m_WorldMatrix;
+		
+	};
+
+}
diff --git a/LibCmo/CK2/ObjImpls/CK3dObject.hpp b/LibCmo/CK2/ObjImpls/CK3dObject.hpp
new file mode 100644
index 0000000..ba95f2a
--- /dev/null
+++ b/LibCmo/CK2/ObjImpls/CK3dObject.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "../../VTAll.hpp"
+#include "CK3dEntity.hpp"
+
+namespace LibCmo::CK2::ObjImpls {
+
+	class CK3dObject : public CK3dEntity {
+	public:
+		CK3dObject(CKContext* ctx, CK_ID ckid, CKSTRING name) : 
+			CK3dEntity(ctx, ckid, name)
+		{}
+		virtual ~CK3dObject() {}
+		LIBCMO_DISABLE_COPY_MOVE(CK3dObject);
+
+		virtual CK_CLASSID GetClassID(void) override { 
+			return CK_CLASSID::CKCID_3DOBJECT; 
+		}
+		// CK3dObject do not implement any load/save functions
+		//virtual void PreSave(CKFileVisitor* file, CKDWORD flags) override;
+		//virtual bool Save(CKStateChunk* chunk, CKFileVisitor* file, CKDWORD flags) override;
+		//virtual bool Load(CKStateChunk* chunk, CKFileVisitor* file) override;
+		//virtual void PostLoad() override;
+	protected:
+
+	};
+
+}
diff --git a/LibCmo/CK2/ObjImpls/CKRenderObject.cpp b/LibCmo/CK2/ObjImpls/CKRenderObject.cpp
new file mode 100644
index 0000000..b2d02a9
--- /dev/null
+++ b/LibCmo/CK2/ObjImpls/CKRenderObject.cpp
@@ -0,0 +1,8 @@
+#include "CKRenderObject.hpp"
+#include "../CKStateChunk.hpp"
+
+namespace LibCmo::CK2::ObjImpls {
+
+	// nothing to compile now
+
+}
diff --git a/LibCmo/CK2/ObjImpls/CKRenderObject.hpp b/LibCmo/CK2/ObjImpls/CKRenderObject.hpp
new file mode 100644
index 0000000..8e63757
--- /dev/null
+++ b/LibCmo/CK2/ObjImpls/CKRenderObject.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "../../VTAll.hpp"
+#include "CKBeObject.hpp"
+
+namespace LibCmo::CK2::ObjImpls {
+
+	class CKRenderObject : public CKBeObject {
+	public:
+		CKRenderObject(CKContext* ctx, CK_ID ckid, CKSTRING name) : 
+			CKBeObject(ctx, ckid, name)
+		{}
+		virtual ~CKRenderObject() {}
+		LIBCMO_DISABLE_COPY_MOVE(CKRenderObject);
+
+		virtual CK_CLASSID GetClassID(void) override { 
+			return CK_CLASSID::CKCID_RENDEROBJECT; 
+		}
+		// CKRenderObject do not implement any load/save functions
+		//virtual void PreSave(CKFileVisitor* file, CKDWORD flags) override;
+		//virtual bool Save(CKStateChunk* chunk, CKFileVisitor* file, CKDWORD flags) override;
+		//virtual bool Load(CKStateChunk* chunk, CKFileVisitor* file) override;
+		//virtual void PostLoad() override;
+	protected:
+
+	};
+
+}
diff --git a/LibCmo/LibCmo.vcxproj b/LibCmo/LibCmo.vcxproj
index 55c3b31..4668ae9 100644
--- a/LibCmo/LibCmo.vcxproj
+++ b/LibCmo/LibCmo.vcxproj
@@ -180,9 +180,11 @@
     <ClCompile Include="CK2\CKGlobals.cpp" />
     <ClCompile Include="CK2\MgrImpls\CKBaseManager.cpp" />
     <ClCompile Include="CK2\CKContext.cpp" />
+    <ClCompile Include="CK2\ObjImpls\CK3dEntity.cpp" />
     <ClCompile Include="CK2\ObjImpls\CKBeObject.cpp" />
     <ClCompile Include="CK2\ObjImpls\CKGroup.cpp" />
     <ClCompile Include="CK2\ObjImpls\CKObject.cpp" />
+    <ClCompile Include="CK2\ObjImpls\CKRenderObject.cpp" />
     <ClCompile Include="CK2\ObjImpls\CKSceneObject.cpp" />
     <ClCompile Include="VTEncoding.cpp" />
     <ClCompile Include="CK2\CKFileReader.cpp" />
@@ -201,8 +203,11 @@
     <ClInclude Include="CK2\CKContext.hpp" />
     <ClInclude Include="CK2\CKStateChunk.hpp" />
     <ClInclude Include="CK2\CKTypes.hpp" />
+    <ClInclude Include="CK2\ObjImpls\CK3dEntity.hpp" />
+    <ClInclude Include="CK2\ObjImpls\CK3dObject.hpp" />
     <ClInclude Include="CK2\ObjImpls\CKBeObject.hpp" />
     <ClInclude Include="CK2\ObjImpls\CKGroup.hpp" />
+    <ClInclude Include="CK2\ObjImpls\CKRenderObject.hpp" />
     <ClInclude Include="CK2\ObjImpls\CKSceneObject.hpp" />
     <ClInclude Include="VTAll.hpp" />
     <ClInclude Include="VTEncoding.hpp" />
diff --git a/LibCmo/LibCmo.vcxproj.filters b/LibCmo/LibCmo.vcxproj.filters
index d3245bc..9cbc81c 100644
--- a/LibCmo/LibCmo.vcxproj.filters
+++ b/LibCmo/LibCmo.vcxproj.filters
@@ -90,6 +90,12 @@
     <ClCompile Include="XContainer\XBitArray.cpp">
       <Filter>Sources\XContainer</Filter>
     </ClCompile>
+    <ClCompile Include="CK2\ObjImpls\CKRenderObject.cpp">
+      <Filter>Sources\CK2\ObjImpls</Filter>
+    </ClCompile>
+    <ClCompile Include="CK2\ObjImpls\CK3dEntity.cpp">
+      <Filter>Sources\CK2\ObjImpls</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="VTUtils.hpp">
@@ -152,5 +158,14 @@
     <ClInclude Include="XContainer\XBitArray.hpp">
       <Filter>Headers\XContainer</Filter>
     </ClInclude>
+    <ClInclude Include="CK2\ObjImpls\CKRenderObject.hpp">
+      <Filter>Headers\CK2\ObjImpls</Filter>
+    </ClInclude>
+    <ClInclude Include="CK2\ObjImpls\CK3dEntity.hpp">
+      <Filter>Headers\CK2\ObjImpls</Filter>
+    </ClInclude>
+    <ClInclude Include="CK2\ObjImpls\CK3dObject.hpp">
+      <Filter>Headers\CK2\ObjImpls</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file