diff --git a/Source/Contents/Configuration/ServiceOptions.cpp b/Source/Contents/Configuration/ServiceOptions.cpp
index acef270..e5b9780 100644
--- a/Source/Contents/Configuration/ServiceOptions.cpp
+++ b/Source/Contents/Configuration/ServiceOptions.cpp
@@ -1,5 +1,8 @@
 #include "Contents/Configuration/ServiceOptions.h"
 
+// GLOBAL: gl_24579
+ServiceOptions g_serviceOptions;
+
 // OFFSET: 0x006C17A0
 // FUNCTION: fn_06318
 unsigned char ServiceOptions::Get(int id) const {
diff --git a/Source/Contents/Configuration/ServiceOptions.h b/Source/Contents/Configuration/ServiceOptions.h
index fa2a9e9..d846d48 100644
--- a/Source/Contents/Configuration/ServiceOptions.h
+++ b/Source/Contents/Configuration/ServiceOptions.h
@@ -10,10 +10,16 @@ enum ServiceOption : int { ConfineCursor = 271 };
 bool IsServiceOption(int id);
 
 struct ServiceOptions {
-  std::unordered_map<std::uint32_t, unsigned char, SkillIdHash>& values;
+  /* 0000 */ std::unordered_map<std::uint32_t, unsigned char, SkillIdHash> values;
 
   unsigned char Get(int id) const;
   bool Set(int id, unsigned char value);
 };
 
+extern ServiceOptions g_serviceOptions;
+
+#if defined(_WIN32) && !defined(_WIN64)
+static_assert(sizeof(ServiceOptions) == 0x20);
+#endif
+
 #endif
diff --git a/Source/UI/Layout/SnapMgr.cpp b/Source/UI/Layout/SnapMgr.cpp
index c96cc49..9492968 100644
--- a/Source/UI/Layout/SnapMgr.cpp
+++ b/Source/UI/Layout/SnapMgr.cpp
@@ -12,9 +12,8 @@ bool g_snapEnabled = true;
 // STATIC: 0x013346A4
 // GLOBAL: gl_21917
 int g_snapDirection = 1;
-// STATIC: 0x013346B0
-// GLOBAL: gl_21919
-SnapObject* g_snapBoundary = nullptr;
+// GLOBAL: gl_24655
+CSnapMgr g_snapMgr;
 
 namespace {
   // INLINED
@@ -264,12 +263,12 @@ void CSnapMgr::MoveEdge(UIWindow* window, int dx, int dy, int side, WindowSnappi
     const int candidateBottom = ((object->window->geometry.y - dy) + down);
     const int screenHeight = snapping.screenHeight;
 
-    if (((y + height) - up) != 0 && (!g_snapBoundary || g_snapBoundary != object || candidateBottom == screenHeight)) {
+    if (((y + height) - up) != 0 && (!g_snapMgr.root || g_snapMgr.root != object || candidateBottom == screenHeight)) {
       bool moveSelf = side != 3;
       if (side == 3) {
-        bool boundaryAncestor = g_snapBoundary == object;
+        bool boundaryAncestor = g_snapMgr.root == object;
         if (!boundaryAncestor) {
-          for (SnapObject* next : g_snapBoundary->edges[1]) {
+          for (SnapObject* next : g_snapMgr.root->edges[1]) {
             if (next == object) {
               boundaryAncestor = true;
               break;
diff --git a/Source/UI/Layout/SnapMgr.h b/Source/UI/Layout/SnapMgr.h
index e03d8a0..d941072 100644
--- a/Source/UI/Layout/SnapMgr.h
+++ b/Source/UI/Layout/SnapMgr.h
@@ -40,7 +40,7 @@ private:
 extern const int g_snapOppositeSide[4];
 extern bool g_snapEnabled;
 extern int g_snapDirection;
-extern SnapObject* g_snapBoundary;
+extern CSnapMgr g_snapMgr;
 
 #if defined(_WIN32) && !defined(_WIN64)
 static_assert(sizeof(CSnapMgr) == 16);
diff --git a/Source/UI/Window/MiniPartyWndAreaMgr.h b/Source/UI/Window/MiniPartyWndAreaMgr.h
new file mode 100644
index 0000000..4916b03
--- /dev/null
+++ b/Source/UI/Window/MiniPartyWndAreaMgr.h
@@ -0,0 +1,30 @@
+#ifndef RAGNAROK_SOURCE_UI_WINDOW_MINIPARTYWNDAREAMGR_H
+#define RAGNAROK_SOURCE_UI_WINDOW_MINIPARTYWNDAREAMGR_H
+
+#include <cstddef>
+#include <vector>
+#include <windows.h>
+
+class CMiniPartyWndAreaMgr {
+public:
+  /* 0004 */ RECT area;
+  /* 0014 */ int columns;
+  /* 0018 */ int rows;
+  /* 001C */ std::vector<RECT> excluded;
+  /* 0028 */ std::vector<int> available;
+
+  // INLINED
+  virtual ~CMiniPartyWndAreaMgr() = default;
+
+  CMiniPartyWndAreaMgr();
+};
+
+extern CMiniPartyWndAreaMgr* g_miniPartyWndAreaMgr;
+
+#if defined(_WIN32) && !defined(_WIN64)
+static_assert(offsetof(CMiniPartyWndAreaMgr, excluded) == 0x1C);
+static_assert(offsetof(CMiniPartyWndAreaMgr, available) == 0x28);
+static_assert(sizeof(CMiniPartyWndAreaMgr) == 0x34);
+#endif
+
+#endif
diff --git a/Source/UI/Window/UIWindowMgr.cpp b/Source/UI/Window/UIWindowMgr.cpp
index 8c3cae6..73c4a5a 100644
--- a/Source/UI/Window/UIWindowMgr.cpp
+++ b/Source/UI/Window/UIWindowMgr.cpp
@@ -1,8 +1,25 @@
+#include "Client/Browser/WebBrowser.h"
 #include "Client/Mode/ActiveGameMode.h"
 #include "Client/Replay.h"
 #include "Contents/Configuration/ServiceConfiguration.h"
+#include "Contents/Configuration/ServiceOptions.h"
+#include "UI/Layout/SnapMgr.h"
+#include "UI/Layout/WindowSnapping.h"
+#include "UI/Lists/UIDropDownBox.h"
+#include "UI/Window/MiniPartyWndAreaMgr.h"
+#include "UI/Window/UIWindow.h"
+#include "UI/Window/WindowRetirement.h"
 #include "UI/Window/UIWindowMgr.h"
 
+#include <algorithm>
+#include <new>
+
+// GLOBAL: gl_24525
+CMiniPartyWndAreaMgr* g_miniPartyWndAreaMgr = nullptr;
+
+// GLOBAL: gl_24366
+UIWindowMgr g_windowMgr;
+
 // OFFSET: 0x00A94FD0
 // FUNCTION: fn_17179
 void UIWindowMgr::InitializeWindowPolicy() {
@@ -527,3 +544,86 @@ UIWindowMgr::UIWindowMgr()
   this->unknown_4F23C = 37;
 }
 
+// OFFSET: 0x007375E0
+// FUNCTION: fn_07649
+CMiniPartyWndAreaMgr::CMiniPartyWndAreaMgr() {
+  SetRect(&this->area, 0, 0, g_windowMgr.unknown_047C, g_windowMgr.unknown_0480);
+}
+
+// OFFSET: 0x00AA66D0
+// FUNCTION: fn_17233
+void UIWindowMgr::Shutdown() {
+  if (!this->modalWindows.empty() && this->modalWindows.back()) {
+    this->activeWindowId = 185;
+  }
+
+  if (this->window_0A30 && this->window_0A30->geometry.visible) {
+    static_cast<CUIDropDownBox*>(this->window_0A30)->Detach();
+    this->window_0A30->Show(0);
+  }
+
+  for (UIWindow*& window : this->rendered) {
+    if (!this->modalWindows.empty() && this->modalWindows.back() && this->persistentWindows.find(window) != this->persistentWindows.end()) {
+      this->retainedPersistentWindow = true;
+    } else if (this->modalWindows.empty() || !this->modalWindows.back() ||
+               std::find(this->modalWindows.begin(), this->modalWindows.end(), window) == this->modalWindows.end()) {
+      this->persistentWindows.erase(window);
+      window->Slot11();
+      delete window;
+      window = nullptr;
+    }
+  }
+
+  for (auto& entry : this->browsers) {
+    delete entry.second;
+    entry.second = nullptr;
+  }
+  this->browsers.clear();
+  if (this->browser_09D0) {
+    delete this->browser_09D0;
+    this->browser_09D0 = nullptr;
+  }
+
+  for (auto entry = this->overlays.begin(); entry != this->overlays.end();) {
+    delete entry->second;
+    entry = this->overlays.erase(entry);
+  }
+  this->rendered.clear();
+  this->retired.clear();
+  this->snapRectangles.clear();
+  this->messageBoxes.clear();
+  this->ResetWindows();
+
+  for (UIWindow*& window : this->snapExcluded) {
+    const bool snappingEnabled = g_serviceOptions.Get(141) != 0;
+    WindowSnapping snapping{g_snapMgr, this->snapRectangles, this->snapExcluded, snappingEnabled, this->unknown_047C, this->unknown_0480};
+    WindowRetirement retirement{this->rendered, this->retired, this->overlays, snapping, this->window_03D4, this->window_03D8,
+                                this->window_03DC, this->window_01B8, this->window_4F2AC};
+    retirement.Destroy(window);
+    window = nullptr;
+  }
+  this->snapExcluded.clear();
+}
+
+// OFFSET: 0x00A8A1C0
+// FUNCTION: fn_17099
+UIWindowMgr::~UIWindowMgr() {
+  if (!g_miniPartyWndAreaMgr) {
+    g_miniPartyWndAreaMgr = new (std::nothrow) CMiniPartyWndAreaMgr;
+  }
+  if (g_miniPartyWndAreaMgr) {
+    delete g_miniPartyWndAreaMgr;
+    g_miniPartyWndAreaMgr = nullptr;
+  }
+
+  this->Shutdown();
+  if (this->unknown_0478) {
+    delete this->unknown_0478;
+    this->unknown_0478 = nullptr;
+  }
+  for (auto& entry : this->savedRectangles) {
+    delete entry.second;
+  }
+  this->savedRectangles.clear();
+}
+
diff --git a/Source/UI/Window/UIWindowMgr.h b/Source/UI/Window/UIWindowMgr.h
index 22279f6..575de77 100644
--- a/Source/UI/Window/UIWindowMgr.h
+++ b/Source/UI/Window/UIWindowMgr.h
@@ -416,9 +416,12 @@ public:
 
   void InitializeWindowPolicy();
   void ResetWindows();
+  void Shutdown();
   UIWindow* LookupWindow(int id);
 };
 
+extern UIWindowMgr g_windowMgr;
+
 #if defined(_WIN32) && !defined(_WIN64)
 static_assert(sizeof(WindowTextEntry) == 0x1C);
 static_assert(sizeof(WindowTextRecord) == 0x20);