diff --git a/LEGO1/lego/sources/roi/legolod.cpp b/LEGO1/lego/sources/roi/legolod.cpp
index 453a4dac..8fa16204 100644
--- a/LEGO1/lego/sources/roi/legolod.cpp
+++ b/LEGO1/lego/sources/roi/legolod.cpp
@@ -13,19 +13,34 @@ DECOMP_SIZE_ASSERT(LegoLOD, 0x20)
 DECOMP_SIZE_ASSERT(LegoLOD::Mesh, 0x08)
 
 // GLOBAL: LEGO1 0x101013d4
+// GLOBAL: BETA10 0x10207230
 LPDIRECT3DRMMATERIAL g_unk0x101013d4 = NULL;
 
 // GLOBAL: LEGO1 0x101013dc
 const char* g_InhPrefix = "inh";
 
+#ifdef BETA10
+inline BOOL GetD3DRM(IDirect3DRM2*& d3drm, Tgl::Renderer* pRenderer);
+#else
 inline IDirect3DRM2* GetD3DRM(Tgl::Renderer* pRenderer);
+#endif
 inline BOOL GetMeshData(IDirect3DRMMesh*& mesh, D3DRMGROUPINDEX& index, Tgl::Mesh* pMesh);
 
 // FUNCTION: LEGO1 0x100aa380
+// FUNCTION: BETA10 0x1018ce90
 LegoLOD::LegoLOD(Tgl::Renderer* p_renderer) : ViewLOD(p_renderer)
 {
 	if (g_unk0x101013d4 == NULL) {
+#ifdef BETA10
+		IDirect3DRM2* d3drm = NULL;
+		assert((p_renderer != NULL));
+		GetD3DRM(d3drm, p_renderer);
+		if (d3drm->CreateMaterial(10.0, &g_unk0x101013d4)) {
+			assert(0);
+		}
+#else
 		GetD3DRM(p_renderer)->CreateMaterial(10.0, &g_unk0x101013d4);
+#endif
 	}
 
 	m_melems = NULL;
@@ -36,6 +51,7 @@ LegoLOD::LegoLOD(Tgl::Renderer* p_renderer) : ViewLOD(p_renderer)
 }
 
 // FUNCTION: LEGO1 0x100aa450
+// FUNCTION: BETA10 0x1018d017
 LegoLOD::~LegoLOD()
 {
 	if (m_numMeshes && m_melems != NULL) {
@@ -395,14 +411,31 @@ void LegoLOD::ClearMeshOffset()
 	m_meshOffset = 0;
 }
 
-inline BOOL GetMeshData(IDirect3DRMMesh*& mesh, D3DRMGROUPINDEX& index, Tgl::Mesh* pMesh)
+// FUNCTION: BETA10 0x1018dfc4
+inline BOOL GetMeshData(IDirect3DRMMesh*& mesh, D3DRMGROUPINDEX& index, Tgl::Mesh* p_tglElem)
 {
-	mesh = ((TglImpl::MeshImpl*) pMesh)->ImplementationData()->groupMesh;
-	index = ((TglImpl::MeshImpl*) pMesh)->ImplementationData()->groupIndex;
+	assert(p_tglElem);
+	TglImpl::MeshImpl* meshImpl = (TglImpl::MeshImpl*) p_tglElem;
+	// Note: Diff in BETA10 (thunked in recompile but not in orig)
+	mesh = meshImpl->ImplementationData()->groupMesh;
+	index = meshImpl->ImplementationData()->groupIndex;
 	return FALSE;
 }
 
+#ifdef BETA10
+// FUNCTION: BETA10 0x1018cfc5
+inline BOOL GetD3DRM(IDirect3DRM2*& d3drm, Tgl::Renderer* p_tglRenderer)
+{
+	// Note: Code duplication with viewmanager.cpp:GetD3DRM()
+	assert(p_tglRenderer);
+	TglImpl::RendererImpl* renderer = (TglImpl::RendererImpl*) p_tglRenderer;
+	// Note: Diff in BETA10 (thunked in recompile but not in orig)
+	d3drm = renderer->ImplementationData();
+	return 0;
+}
+#else
 inline IDirect3DRM2* GetD3DRM(Tgl::Renderer* pRenderer)
 {
 	return ((TglImpl::RendererImpl*) pRenderer)->ImplementationData();
 }
+#endif
diff --git a/LEGO1/lego/sources/roi/legolod.h b/LEGO1/lego/sources/roi/legolod.h
index e787d377..fa59d97c 100644
--- a/LEGO1/lego/sources/roi/legolod.h
+++ b/LEGO1/lego/sources/roi/legolod.h
@@ -9,6 +9,7 @@ class LegoTextureInfo;
 class LegoStorage;
 
 // VTABLE: LEGO1 0x100dbf10
+// VTABLE: BETA10 0x101c3978
 // SIZE 0x20
 class LegoLOD : public ViewLOD {
 public:
@@ -22,9 +23,11 @@ class LegoLOD : public ViewLOD {
 	~LegoLOD() override;
 
 	// FUNCTION: LEGO1 0x100aae70
+	// FUNCTION: BETA10 0x1018e650
 	int NumPolys() const override { return m_numPolys; } // vtable+0x0c
 
 	// FUNCTION: LEGO1 0x100aae80
+	// FUNCTION: BETA10 0x1018e670
 	float VTable0x10() override { return 0.0; } // vtable+0x10
 
 	LegoResult Read(Tgl::Renderer* p_renderer, LegoTextureContainer* p_textureContainer, LegoStorage* p_storage);
@@ -38,6 +41,7 @@ class LegoLOD : public ViewLOD {
 	static LegoBool HasInhPrefix(const LegoChar* p_name);
 
 	// SYNTHETIC: LEGO1 0x100aa430
+	// SYNTHETIC: BETA10 0x1018e530
 	// LegoLOD::`scalar deleting destructor'
 
 protected:
diff --git a/LEGO1/realtime/roi.h b/LEGO1/realtime/roi.h
index 73e837d6..64964ad3 100644
--- a/LEGO1/realtime/roi.h
+++ b/LEGO1/realtime/roi.h
@@ -70,12 +70,14 @@ class BoundingSphere {
  * a geometric object.
  */
 // VTABLE: LEGO1 0x100dbd90
+// VTABLE: BETA10 0x101c34c0
 // SIZE 0x04
 class LODObject {
 public:
 	// LODObject();
 
 	// FUNCTION: LEGO1 0x100a6f00
+	// FUNCTION: BETA10 0x10174c70
 	virtual ~LODObject() {}
 
 	virtual double AveragePolyArea() const = 0; // vtable+0x04
@@ -84,9 +86,13 @@ class LODObject {
 	virtual float VTable0x10() = 0;             // vtable+0x10
 
 	// SYNTHETIC: LEGO1 0x100a6f10
+	// SYNTHETIC: BETA10 0x10174c90
 	// LODObject::`scalar deleting destructor'
 };
 
+// SYNTHETIC: BETA10 0x1018e620
+// LODObject::LODObject
+
 /*
  * A CompoundObject is simply a set of ROI objects which
  * all together represent a single object with sub-parts.
diff --git a/LEGO1/viewmanager/viewlod.cpp b/LEGO1/viewmanager/viewlod.cpp
index aa04813e..d7ffef60 100644
--- a/LEGO1/viewmanager/viewlod.cpp
+++ b/LEGO1/viewmanager/viewlod.cpp
@@ -1,7 +1,11 @@
 #include "viewlod.h"
 
 // FUNCTION: LEGO1 0x100a5e40
+// STUB: BETA10 0x10171bdf
 ViewLOD::~ViewLOD()
 {
-	delete m_meshBuilder;
+	// TODO: BETA10 mismatches
+	if (m_meshBuilder) {
+		delete m_meshBuilder;
+	}
 }
diff --git a/LEGO1/viewmanager/viewlod.h b/LEGO1/viewmanager/viewlod.h
index b7104526..cf4f1d7a 100644
--- a/LEGO1/viewmanager/viewlod.h
+++ b/LEGO1/viewmanager/viewlod.h
@@ -10,6 +10,7 @@
 //
 
 // VTABLE: LEGO1 0x100dbd70
+// VTABLE: BETA10 0x101c34a8
 // SIZE 0x0c
 class ViewLOD : public LODObject {
 public:
@@ -17,13 +18,17 @@ class ViewLOD : public LODObject {
 		c_hasMesh = 0x10
 	};
 
+	// FUNCTION: BETA10 0x1018e570
 	ViewLOD(Tgl::Renderer* pRenderer) : m_meshBuilder(NULL), m_flags(3) {}
+
 	~ViewLOD() override;
 
 	// FUNCTION: LEGO1 0x100a6f30
+	// FUNCTION: BETA10 0x10174db0
 	double AveragePolyArea() const override { return 2 * 3.14159 * 10.0 / NumPolys(); } // vtable+0x04
 
 	// FUNCTION: LEGO1 0x100a6f50
+	// FUNCTION: BETA10 0x10174de0
 	int NVerts() const override { return NumPolys() * 2; } // vtable+0x08
 
 	Tgl::MeshBuilder* GetMeshBuilder() { return m_meshBuilder; }
@@ -36,6 +41,7 @@ class ViewLOD : public LODObject {
 	void ClearFlag(unsigned char p_flag) { m_flags &= ~p_flag; }
 
 	// SYNTHETIC: LEGO1 0x100a6f60
+	// SYNTHETIC: BETA10 0x10174f10
 	// ViewLOD::`scalar deleting destructor'
 
 protected: