diff --git a/src/AcDream.App/Rendering/GameWindow.cs b/src/AcDream.App/Rendering/GameWindow.cs
index 7f8063ff..56f7fdc5 100644
--- a/src/AcDream.App/Rendering/GameWindow.cs
+++ b/src/AcDream.App/Rendering/GameWindow.cs
@@ -2170,9 +2170,44 @@ public sealed class GameWindow : IDisposable
                 // Content offset by the border so it sits inside the chrome.
                 inventoryRoot.Left = invBorder; inventoryRoot.Top = invBorder;
                 inventoryRoot.Width = invContentW; inventoryRoot.Height = invContentH;
-                inventoryRoot.Anchors = AcDream.App.UI.AnchorEdges.Left | AcDream.App.UI.AnchorEdges.Top;
+                // Content fills the frame vertically (Left|Top|Bottom = fixed width + height tracks
+                // the frame) so a vertical resize grows the inner content.
+                inventoryRoot.Anchors = AcDream.App.UI.AnchorEdges.Left | AcDream.App.UI.AnchorEdges.Top
+                                      | AcDream.App.UI.AnchorEdges.Bottom;
                 inventoryRoot.Draggable = false;
                 inventoryFrame.AddChild(inventoryRoot);
+
+                // Vertical-only resize: drag the BOTTOM edge to expand and see more of the pack.
+                // ResizeX=false + ResizableEdges=Bottom blocks horizontal resize (user request).
+                // MinHeight = the dat default (no shrink below it); MaxHeight = toward full screen.
+                inventoryFrame.Resizable      = true;
+                inventoryFrame.ResizeX        = false;
+                inventoryFrame.ResizableEdges = AcDream.App.UI.ResizeEdges.Bottom;
+                inventoryFrame.MinHeight      = invContentH + 2 * invBorder;
+                inventoryFrame.MaxHeight      = 560f;
+
+                // Stretch the contents region with the window: the gm3DItemsUI sub-window + its grid
+                // + scrollbar + the full-window backdrop grow vertically (Left|Top|Bottom); the
+                // paperdoll + side-bag column stay pinned at the top (Left|Top). The grid's ViewHeight
+                // grows → more rows + the scrollbar thumb ratio (view/content) reflects it.
+                void StretchV(uint id)
+                {
+                    if (invLayout!.FindElement(id) is { } el)
+                        el.Anchors = AcDream.App.UI.AnchorEdges.Left | AcDream.App.UI.AnchorEdges.Top
+                                   | AcDream.App.UI.AnchorEdges.Bottom;
+                }
+                void PinTopLeft(uint id)
+                {
+                    if (invLayout!.FindElement(id) is { } el)
+                        el.Anchors = AcDream.App.UI.AnchorEdges.Left | AcDream.App.UI.AnchorEdges.Top;
+                }
+                StretchV(0x100001D0u);   // full-window backdrop
+                StretchV(0x100001CFu);   // gm3DItemsUI sub-window (contents-grid container)
+                StretchV(0x100001C6u);   // contents grid (UiItemList)
+                StretchV(0x100001C7u);   // contents scrollbar
+                PinTopLeft(0x100001CDu); // paperdoll (fixed at top)
+                PinTopLeft(0x100001CEu); // side-bag column (fixed at top)
+
                 _uiHost.Root.AddChild(inventoryFrame);
                 _uiHost.RegisterWindow(AcDream.App.UI.WindowNames.Inventory, inventoryFrame);