diff --git a/src/collections/game/GameStructures.ts b/src/collections/game/GameStructures.ts
index 43c87a8..afacc02 100644
--- a/src/collections/game/GameStructures.ts
+++ b/src/collections/game/GameStructures.ts
@@ -1,6 +1,5 @@
 import { CollectionConfig } from "payload";
 import { isDeveloper } from "@/utils/access-control/isRole";
-import { GameStructure } from "@/payload-types";
 
 export const GameStructures: CollectionConfig = {
   slug: "game-structures",
@@ -9,59 +8,11 @@ export const GameStructures: CollectionConfig = {
     useAsTitle: "name",
   },
   access: {
+    read: ({ req }) => !!req.user,
     create: isDeveloper,
     update: isDeveloper,
     delete: isDeveloper,
   },
-  hooks: {
-    beforeValidate: [
-      ({ data }) => {
-        const rows = data?.storedResources;
-
-        if (!Array.isArray(rows) || rows.length === 0) return data;
-
-        type NormalizedRow = { id?: string | null; resource: unknown; amount: number };
-
-        const byResource = new Map<string, NormalizedRow>();
-
-        for (const row of rows) {
-          if (!row) continue;
-
-          // Normalize relationship value to an ID-like scalar when possible
-          const rawResource = (row as any).resource;
-          const resourceId =
-            rawResource && typeof rawResource === "object" && "id" in rawResource
-              ? (rawResource as any).id
-              : rawResource;
-
-          if (resourceId == null) continue;
-
-          const resourceKey = String(resourceId);
-          const amount =
-            typeof (row as any).amount === "number" && Number.isFinite((row as any).amount)
-              ? (row as any).amount
-              : 0;
-
-          const existing = byResource.get(resourceKey);
-
-          if (existing) {
-            existing.amount += amount;
-            // Keep the first row's id to preserve admin UI row identity
-          } else {
-            byResource.set(resourceKey, {
-              id: (row as any).id ?? undefined,
-              resource: resourceId,
-              amount,
-            });
-          }
-        }
-
-        data!.storedResources = Array.from(byResource.values());
-
-        return data;
-      },
-    ],
-  },
   fields: [
     {
       name: "name",
@@ -113,6 +64,33 @@ export const GameStructures: CollectionConfig = {
           name: "amount",
           type: "number",
           required: true,
+          min: 1,
+        },
+        {
+          name: "gridX",
+          type: "number",
+          required: true,
+          min: 0,
+          admin: {
+            description: "Column position in the inventory grid (0-indexed).",
+          },
+        },
+        {
+          name: "gridY",
+          type: "number",
+          required: true,
+          min: 0,
+          admin: {
+            description: "Row position in the inventory grid (0-indexed).",
+          },
+        },
+        {
+          name: "rotated",
+          type: "checkbox",
+          defaultValue: false,
+          admin: {
+            description: "Whether this item is rotated 90 degrees (swaps width and height).",
+          },
         },
       ],
     },
diff --git a/src/collections/logistics/Resources.ts b/src/collections/logistics/Resources.ts
index 8fc1b27..3d3d1f0 100644
--- a/src/collections/logistics/Resources.ts
+++ b/src/collections/logistics/Resources.ts
@@ -38,6 +38,7 @@ export const Resources: CollectionConfig = {
     group: "Logistics",
   },
   access: {
+    read: ({ req }) => !!req.user,
     update: onlyIfNotPrimaryCurrency,
     delete: onlyIfNotPrimaryCurrency,
   },
@@ -76,18 +77,22 @@ export const Resources: CollectionConfig = {
           hooks: {
             afterRead: [
               async ({ data, req }) => {
-                const gameRules = await req.payload.findGlobal({
-                  slug: "game-rules",
-                  depth: 0,
-                });
+                try {
+                  const gameRules = await req.payload.findGlobal({
+                    slug: "game-rules",
+                    depth: 0,
+                  });
 
-                const primaryCurrencyId =
-                  typeof gameRules.mainCurrency === "object"
-                    ? gameRules.mainCurrency?.id
-                    : gameRules.mainCurrency;
+                  const primaryCurrencyId =
+                    typeof gameRules.mainCurrency === "object"
+                      ? gameRules.mainCurrency?.id
+                      : gameRules.mainCurrency;
 
-                if (primaryCurrencyId) {
-                  return data?.id === primaryCurrencyId;
+                  if (primaryCurrencyId) {
+                    return data?.id === primaryCurrencyId;
+                  }
+                } catch (_) {
+                  // Silently fail — game-rules global may not exist yet
                 }
               },
             ],
@@ -281,6 +286,59 @@ export const Resources: CollectionConfig = {
               "Maximum amount that fits in a single standard cargo slot (if applicable.)",
           },
         },
+        {
+          label: "Grid Dimensions",
+          type: "group",
+          fields: [
+            {
+              name: "gridWidth",
+              type: "number",
+              required: true,
+              defaultValue: 1,
+              min: 1,
+              admin: {
+                description: "Width of this resource in grid cells.",
+              },
+            },
+            {
+              name: "gridHeight",
+              type: "number",
+              required: true,
+              defaultValue: 1,
+              min: 1,
+              admin: {
+                description: "Height of this resource in grid cells.",
+              },
+            },
+            {
+              name: "stackable",
+              type: "checkbox",
+              defaultValue: true,
+              admin: {
+                description:
+                  "Can multiple units of this resource stack in a single grid cell? If checked, the amount displayed on the grid reflects the stack count.",
+              },
+            },
+            {
+              name: "maxStackSize",
+              type: "number",
+              admin: {
+                description:
+                  "Maximum number of units that can exist in a single grid stack. Leave empty for unlimited. Only applies if stackable is checked.",
+                condition: (_, siblingData) => siblingData?.stackable === true,
+              },
+            },
+            {
+              name: "rotatable",
+              type: "checkbox",
+              defaultValue: true,
+              admin: {
+                description:
+                  "Can this resource be rotated 90 degrees in the grid? When rotated, width and height are swapped.",
+              },
+            },
+          ],
+        },
       ],
     },
   ],
diff --git a/src/payload-types.ts b/src/payload-types.ts
index 7f73b6d..330afda 100644
--- a/src/payload-types.ts
+++ b/src/payload-types.ts
@@ -239,6 +239,18 @@ export interface GameStructure {
     | {
         resource: number | Resource;
         amount: number;
+        /**
+         * Column position in the inventory grid (0-indexed).
+         */
+        gridX: number;
+        /**
+         * Row position in the inventory grid (0-indexed).
+         */
+        gridY: number;
+        /**
+         * Whether this item is rotated 90 degrees (swaps width and height).
+         */
+        rotated?: boolean | null;
         id?: string | null;
       }[]
     | null;
@@ -516,6 +528,26 @@ export interface Resource {
    * Maximum amount that fits in a single standard cargo slot (if applicable.)
    */
   stackSize?: number | null;
+  /**
+   * Width of this resource in grid cells.
+   */
+  gridWidth: number;
+  /**
+   * Height of this resource in grid cells.
+   */
+  gridHeight: number;
+  /**
+   * Can multiple units of this resource stack in a single grid cell? If checked, the amount displayed on the grid reflects the stack count.
+   */
+  stackable?: boolean | null;
+  /**
+   * Maximum number of units that can exist in a single grid stack. Leave empty for unlimited. Only applies if stackable is checked.
+   */
+  maxStackSize?: number | null;
+  /**
+   * Can this resource be rotated 90 degrees in the grid? When rotated, width and height are swapped.
+   */
+  rotatable?: boolean | null;
   updatedAt: string;
   createdAt: string;
 }
@@ -1558,6 +1590,9 @@ export interface GameStructuresSelect<T extends boolean = true> {
     | {
         resource?: T;
         amount?: T;
+        gridX?: T;
+        gridY?: T;
+        rotated?: T;
         id?: T;
       };
   updatedAt?: T;
@@ -1982,6 +2017,11 @@ export interface ResourcesSelect<T extends boolean = true> {
   unitOfMeasure?: T;
   massPerUnit?: T;
   stackSize?: T;
+  gridWidth?: T;
+  gridHeight?: T;
+  stackable?: T;
+  maxStackSize?: T;
+  rotatable?: T;
   updatedAt?: T;
   createdAt?: T;
 }