diff --git a/Source/Render/DX7/RenderSystemDX7.h b/Source/Render/DX7/RenderSystemDX7.h
index aeff9bb3..f4c2bf94 100644
--- a/Source/Render/DX7/RenderSystemDX7.h
+++ b/Source/Render/DX7/RenderSystemDX7.h
@@ -46,6 +46,8 @@ private:
   /* 000C */ std::shared_ptr<CSurface> m_backBuffer;
 };
 
+extern int g_configuredFullscreen;
+
 void ClearDirectDrawModes();
 
 #if defined(_WIN32) && !defined(_WIN64)
diff --git a/Source/UI/GameSettings/GameSettingsUI.cpp b/Source/UI/GameSettings/GameSettingsUI.cpp
index d533fd36..01ab8507 100644
--- a/Source/UI/GameSettings/GameSettingsUI.cpp
+++ b/Source/UI/GameSettings/GameSettingsUI.cpp
@@ -1,17 +1,24 @@
 #include "UI/GameSettings/GameSettingsUI.h"
+#include "Client/Mode/ModeMgr.h"
 #include "Contents/Configuration/ServiceOptions.h"
 #include "Contents/MessageTable.h"
 #include "Contents/SkinMgr.h"
+#include "Contents/Sound/SoundMgr.h"
 #include "Network/Connection/Connection.h"
 #include "Network/Packets/PacketLengths.h"
 #include "Render/DisplayMode.h"
+#include "Render/DX7/RenderSystemDX7.h"
 #include "Render/RenderAdapter.h"
 #include "Render/RenderBackends.h"
 #include "UI/Buttons/UIRadioButton.h"
+#include "UI/Lists/UIVScrollBar.h"
+#include "UI/Window/UIRoulletteWnd.h"
 #include "UI/Window/UIWindowMgr.h"
 #include "UI/Window/WindowBorder.h"
 
+#include <algorithm>
 #include <cstdint>
+#include <string>
 
 namespace {
   struct RodexSpamOptionPacket {
@@ -22,6 +29,9 @@ namespace {
   static_assert(sizeof(RodexSpamOptionPacket) == 12);
 }
 
+template <>
+__declspec(noinline) void CUIListBoxEx<GameSettingsUI::CUIComboItem, std::string>::SelectItem(CUIListItem* item);
+
 // OFFSET: 0x00A344D0
 // OFFSET: 0x00A34500
 // OFFSET: 0x00A34530
@@ -40,6 +50,44 @@ template void CUIComboBox<GameSettingsUI::CUIComboItem, RenderBackend>::Paint();
 template void CUIComboBox<GameSettingsUI::CUIComboItem, DisplayMode>::Paint();
 template void CUIComboBox<GameSettingsUI::CUIComboItem, RenderAdapter>::Paint();
 
+// OFFSET: 0x00A40040
+// OFFSET: 0x00A40050
+// OFFSET: 0x00A40060
+// OFFSET: 0x00A40070
+// FUNCTION: fn_15962
+// FUNCTION: fn_15963
+// FUNCTION: fn_15964
+// FUNCTION: fn_15965
+template <class T, class D> unsigned int CUIComboBox<T, D>::Selected() const {
+  return this->listBox->selected;
+}
+
+template unsigned int CUIComboBox<GameSettingsUI::CUIComboItem, RenderAdapter>::Selected() const;
+template unsigned int CUIComboBox<GameSettingsUI::CUIComboItem, DisplayMode>::Selected() const;
+template unsigned int CUIComboBox<GameSettingsUI::CUIComboItem, RenderBackend>::Selected() const;
+template unsigned int CUIComboBox<GameSettingsUI::CUIComboItem, std::string>::Selected() const;
+
+// OFFSET: 0x00A41FE0
+// OFFSET: 0x00A42060
+// OFFSET: 0x00A420E0
+// OFFSET: 0x00A42160
+// FUNCTION: fn_16009
+// FUNCTION: fn_16010
+// FUNCTION: fn_16011
+// FUNCTION: fn_16012
+template <class T, class D> void CUIComboBox<T, D>::UpdateListHeight() {
+  const int height = std::min<unsigned int>(this->listBox->data.size(), this->visibleItems) * this->itemHeight;
+  if (height != this->listBox->geometry.height) {
+    this->listBox->Resize(this->listBox->geometry.width, height);
+  }
+  this->listBox->UpdateScrollBar();
+}
+
+template void CUIComboBox<GameSettingsUI::CUIComboItem, RenderAdapter>::UpdateListHeight();
+template void CUIComboBox<GameSettingsUI::CUIComboItem, DisplayMode>::UpdateListHeight();
+template void CUIComboBox<GameSettingsUI::CUIComboItem, RenderBackend>::UpdateListHeight();
+template void CUIComboBox<GameSettingsUI::CUIComboItem, std::string>::UpdateListHeight();
+
 // OFFSET: 0x00A34590
 // FUNCTION: fn_15411
 template <>
@@ -643,6 +691,49 @@ void CUIPage::Slot16() {
   }
 }
 
+// OFFSET: 0x00A3F360
+
+// OFFSET: 0x00A3F3D0
+
+// OFFSET: 0x00A3F4C0
+
+// OFFSET: 0x00A3F560
+
+// OFFSET: 0x00A3F5C0
+
+// OFFSET: 0x00A3F6B0
+
+// OFFSET: 0x00A3F6D0
+
+// OFFSET: 0x00A401C0
+
+// OFFSET: 0x00A40270
+// FUNCTION: fn_15968
+void CUIListPage::Slot54(CUIOptionItem* item, const TALKTYPE& type) {
+}
+
+// OFFSET: 0x00A41E30
+
+// OFFSET: 0x00A41E90
+
+// OFFSET: 0x00A41F30
+
+// OFFSET: 0x00A42FE0
+
+// OFFSET: 0x00A42FF0
+
+// OFFSET: 0x00A43650
+
+// OFFSET: 0x00A436A0
+
+// OFFSET: 0x00A43700
+
+// OFFSET: 0x00A43810
+
+// OFFSET: 0x00A43870
+
+// OFFSET: 0x00A43A40
+
 // OFFSET: 0x00A43B70
 // FUNCTION: fn_16045
 void CUIPage::Refresh() {
diff --git a/Source/UI/GameSettings/GameSettingsUI.h b/Source/UI/GameSettings/GameSettingsUI.h
index 0fbb2e0e..26a511dc 100644
--- a/Source/UI/GameSettings/GameSettingsUI.h
+++ b/Source/UI/GameSettings/GameSettingsUI.h
@@ -1,57 +1,161 @@
 #ifndef RAGNAROK_SOURCE_UI_GAMESETTINGS_GAMESETTINGSUI_H
 #define RAGNAROK_SOURCE_UI_GAMESETTINGS_GAMESETTINGSUI_H
 
+#include "Render/DisplayMode.h"
+#include "Render/RenderAdapter.h"
+#include "Render/RenderBackends.h"
 #include "UI/Lists/UIListBoxTemplate.h"
 #include "UI/Window/UIControl.h"
 #include "UI/Window/UIFrameWnd.h"
 
+#include <string>
+
 enum TALKTYPE : int;
 
+class CUICheckBox;
+class CUIRadioButton;
+class CUIStaticText;
+
 template <class T, class D> class CUIComboBox : public CUIControl {
 public:
   void Paint() override;
+  unsigned int Selected() const;
+  void UpdateListHeight();
+
+  /* 0084 */ unsigned char unknown_0084[0x08];
+  /* 008C */ CUIListBoxEx<T, D>* listBox;
+  /* 0090 */ unsigned char unknown_0090[0x04];
+  /* 0094 */ int itemHeight;
+  /* 0098 */ int visibleItems;
 };
 
 namespace GameSettingsUI {
+class CUIComboItem;
+class CUIOptionItem;
+
 class CUIGroup : public CUIControl {
 public:
   virtual void Apply();
   virtual void Refresh() = 0;
+
+  /* 0080 */ CUIStaticText* m_title;
 };
 
 class CUIGroupEmblem : public CUIGroup {
 public:
   void Apply() override;
+  void Refresh() override;
+  __declspec(noinline) void SetEnabled(bool enabled);
+  void OnSelect(CUIRadioButton* button);
+
+  /* 0084 */ CUIRadioButton* m_onButton;
+  /* 0088 */ CUIStaticText* m_onText;
+  /* 008C */ CUIRadioButton* m_offButton;
+  /* 0090 */ CUIStaticText* m_offText;
+};
+
+class CUIGroupFullscreen : public CUIGroup {
+public:
+  void Refresh() override;
+
+  /* 0084 */ CUIRadioButton* m_onButton;
+  /* 0088 */ CUIStaticText* m_onText;
+  /* 008C */ CUIRadioButton* m_offButton;
+  /* 0090 */ CUIStaticText* m_offText;
+};
+
+class CUIGroupGraphics : public CUIGroup {
+public:
+  /* 0084 */ CUIComboBox<CUIComboItem, RenderAdapter>* m_adapterCombo;
+  /* 0088 */ CUIStaticText* m_modeText;
+  /* 008C */ CUIComboBox<CUIComboItem, DisplayMode>* m_modeCombo;
+  /* 0090 */ RenderAdapter m_adapter;
+  /* 00F8 */ RenderAdapter m_pendingAdapter;
+  /* 0160 */ DisplayMode m_mode;
+  /* 0184 */ DisplayMode m_pendingMode;
+};
+
+class CUIGroupGraphicsAPI : public CUIGroup {
+public:
+  /* 0084 */ CUIComboBox<CUIComboItem, RenderBackend>* m_combo;
+  /* 0088 */ int m_backend;
+  /* 008C */ int m_pendingBackend;
 };
 
 class CUIGroupLogInOut : public CUIGroup {
 public:
   void Apply() override;
+  void Refresh() override;
+  __declspec(noinline) void SetEnabled(bool enabled);
+  void OnSelect(CUIRadioButton* button);
+
+  /* 0084 */ CUIRadioButton* m_onButton;
+  /* 0088 */ CUIStaticText* m_onText;
+  /* 008C */ CUIRadioButton* m_offButton;
+  /* 0090 */ CUIStaticText* m_offText;
 };
 
 class CUIGroupRodexSpam : public CUIGroup {
 public:
   void Apply() override;
+  void OnSelect(CUIRadioButton* button);
+
+  /* 0084 */ CUIRadioButton* m_onButton;
+  /* 0088 */ CUIStaticText* m_onText;
+  /* 008C */ CUIRadioButton* m_offButton;
+  /* 0090 */ CUIStaticText* m_offText;
 };
 
 class CUIGroupSkin : public CUIGroup {
 public:
   void Apply() override;
+  void Refresh() override;
+
+  /* 0084 */ CUIComboBox<CUIComboItem, std::string>* m_combo;
 };
 
 class CUIGroupSound : public CUIGroup {
 public:
   void Paint() override;
+  void Refresh() override;
+  __declspec(noinline) void SetBgmEnabled(bool enabled);
+  __declspec(noinline) void SetBgmVolume(int volume);
+  __declspec(noinline) void SetEffectVolume(int volume);
+  void OnBgmMute(bool muted);
+  void OnEffectMute(bool muted);
+  void OnBgmScroll(int position);
+  void OnEffectScroll(int position);
+
+  /* 0084 */ CUIStaticText* m_bgmText;
+  /* 0088 */ CUIVScrollBar* m_bgmSlider;
+  /* 008C */ CUICheckBox* m_bgmMute;
+  /* 0090 */ CUIStaticText* unknown_0090;
+  /* 0094 */ CUIStaticText* m_effectText;
+  /* 0098 */ CUIVScrollBar* m_effectSlider;
+  /* 009C */ CUICheckBox* m_effectMute;
 };
 
 class CUIGroupSpriteDetailLevel : public CUIGroup {
 public:
   void Paint() override;
+  void Refresh() override;
+
+  /* 0084 */ CUIVScrollBar* m_slider;
 };
 
 class CUIGroupTextureDetailLevel : public CUIGroup {
 public:
   void Paint() override;
+
+  /* 0084 */ CUIVScrollBar* m_slider;
+};
+
+class CUIGroupTrilinear : public CUIGroup {
+public:
+  /* 0084 */ CUIRadioButton* m_onButton;
+  /* 0088 */ CUIStaticText* m_onText;
+  /* 008C */ CUIRadioButton* m_offButton;
+  /* 0090 */ CUIStaticText* m_offText;
 };
 
 class CUIPage : public CUIControl {
@@ -62,10 +166,23 @@ public:
   virtual void Refresh();
 };
 
+class CUIGraphicsPage : public CUIPage {
+public:
+  bool IsModified();
+
+  /* 0080 */ CUIGroupGraphicsAPI* m_graphicsApi;
+  /* 0084 */ CUIGroupGraphics* m_graphics;
+  /* 0088 */ CUIGroupSpriteDetailLevel* m_spriteDetailLevel;
+  /* 008C */ CUIGroupTextureDetailLevel* m_textureDetailLevel;
+  /* 0090 */ CUIGroupFullscreen* m_fullscreen;
+  /* 0094 */ CUIGroupTrilinear* m_trilinear;
+};
+
 class CUIListPage : public CUIControl {
 public:
   void Slot16() override;
   void Paint() override;
+  virtual void Slot54(CUIOptionItem* item, const TALKTYPE& type);
 };
 
 class CUIComboItem : public CUIListItem {