diff --git a/src/app/project/game-model/GameModel.ts b/src/app/project/game-model/GameModel.ts
index 295b6bb..86a2003 100644
--- a/src/app/project/game-model/GameModel.ts
+++ b/src/app/project/game-model/GameModel.ts
@@ -11,6 +11,11 @@ import {SimpleTemplateGamesystem} from "./templates/simpleGamesystem/SimpleTempl
 import {ProductTemplateSystem} from "./templates/productGamesystem/ProductTemplateSystem";
 import {ProductTemplateCreator} from "./templates/productGamesystem/ProductTemplateCreator";
 import {CharacterRelation} from "./characters/CharacterRelation";
+import {ItemGroup} from "./inventory/ItemGroup";
+import {AbstractItemGroup} from "./inventory/AbstractItemGroup";
+import {GameModelLoader} from "../../../../app/storage/loader/GameModelLoader";
+import {ConcreteItemGroup} from "./inventory/ConcreteItemGroup";
+import {Item} from "./inventory/Item";
 
 export class GameModel {
   gameModelName: string
@@ -18,9 +23,63 @@ export class GameModel {
   gamesystems: Gamesystem<any, any>[] = [];
   scriptAccounts: ScriptAccount[] = [];
   characters: Character[] = []
+  itemgroups: ItemGroup[] = []
 
   constructor(gameModelName: string) {
     this.gameModelName = gameModelName;
+
+    this.addAbstractItemgroup("Clothing", undefined);
+    this.addAbstractItemgroup("Inventory", undefined);
+    this.addConcreteItemgroup("Oberteil", GameModel.findItemgroupByName("Clothing", this.itemgroups)! as AbstractItemGroup);
+    this.addConcreteItemgroup("Hose", GameModel.findItemgroupByName("Clothing", this.itemgroups)! as AbstractItemGroup);
+  }
+
+  addAbstractItemgroup(groupName: string, parentgroup: AbstractItemGroup | undefined) {
+    //Ensure that Itemgroup does not exist
+    if(parentgroup == undefined) {
+      if(GameModel.findItemgroupByName(groupName, this.itemgroups) == undefined) {
+        this.itemgroups.push(new AbstractItemGroup(groupName, "", ModelComponentType.ITEMGROUP));
+      }
+    } else {
+      if(GameModel.findItemgroupByName(groupName, parentgroup.children) == undefined) {
+        parentgroup.addChildItemgroup(new AbstractItemGroup(groupName, "", ModelComponentType.ITEMGROUP));
+      }
+    }
+  }
+
+  addConcreteItemgroup(groupName: string, parentgroup: AbstractItemGroup) {
+    //Ensure that Itemgroup does not exist
+    if(parentgroup == undefined) {
+      if(GameModel.findItemgroupByName(groupName, this.itemgroups) == undefined) {
+        this.itemgroups.push(new ConcreteItemGroup(groupName, "", ModelComponentType.ITEMGROUP));
+      }
+    } else {
+      if(GameModel.findItemgroupByName(groupName, parentgroup.children) == undefined) {
+        parentgroup.addChildItemgroup(new ConcreteItemGroup(groupName, "", ModelComponentType.ITEMGROUP));
+      }
+    }
+  }
+
+  addItem(itemName: string, conceteItemgroupName: string) {
+    const itemgroup = GameModel.findItemgroupByName(conceteItemgroupName, this.itemgroups);
+    if(itemgroup instanceof ConcreteItemGroup) {
+      itemgroup.addItem(new Item(itemName, "", ModelComponentType.ITEM ))
+    }
+  }
+
+  private static findItemgroupByName(name: string, itemgroups: ItemGroup[]) {
+    const itemgroupQueue: ItemGroup[] = itemgroups.concat();
+    while(itemgroupQueue.length > 0 ) {
+      const currentItemgroup = itemgroupQueue.shift()!;
+
+      if(currentItemgroup.componentName === name) {
+        return currentItemgroup;
+      }
+
+      if(currentItemgroup instanceof AbstractItemGroup) {
+        currentItemgroup.children.forEach(itemgroup => itemgroupQueue.push(itemgroup));
+      }
+    }
   }
 
   addGamesystem(gamesystem: Gamesystem<any, any>) {
diff --git a/src/app/project/game-model/ModelComponentType.ts b/src/app/project/game-model/ModelComponentType.ts
index 14eaf8b..ffef110 100644
--- a/src/app/project/game-model/ModelComponentType.ts
+++ b/src/app/project/game-model/ModelComponentType.ts
@@ -1,6 +1,8 @@
 export enum ModelComponentType {
   SCRIPTACCOUNT,
   GAMESYTEM,
-  CHARACTER
+  CHARACTER,
+  ITEMGROUP,
+  ITEM
 
 }
diff --git a/src/app/project/game-model/inventory/AbstractItemGroup.ts b/src/app/project/game-model/inventory/AbstractItemGroup.ts
new file mode 100644
index 0000000..9cb8a32
--- /dev/null
+++ b/src/app/project/game-model/inventory/AbstractItemGroup.ts
@@ -0,0 +1,10 @@
+import {ItemGroup} from "./ItemGroup";
+
+export class AbstractItemGroup extends ItemGroup {
+
+  children: ItemGroup[] = [];
+
+  addChildItemgroup(itemGroup: ItemGroup) {
+    this.children.push(itemGroup)
+  }
+}
diff --git a/src/app/project/game-model/inventory/ConcreteItemGroup.ts b/src/app/project/game-model/inventory/ConcreteItemGroup.ts
new file mode 100644
index 0000000..3dad098
--- /dev/null
+++ b/src/app/project/game-model/inventory/ConcreteItemGroup.ts
@@ -0,0 +1,17 @@
+import {ItemGroup} from "./ItemGroup";
+import {Item} from "./Item";
+
+export class ConcreteItemGroup extends ItemGroup {
+
+  items: Item[] = [];
+
+  addItem(item: Item) {
+    if(this.findItemByName(item.componentName) == undefined) {
+      this.items.push(item);
+    }
+  }
+
+  findItemByName(itemName: string) {
+    return this.items.find(item => item.componentName === itemName);
+  }
+}
diff --git a/src/app/project/game-model/inventory/Item.ts b/src/app/project/game-model/inventory/Item.ts
new file mode 100644
index 0000000..179aa18
--- /dev/null
+++ b/src/app/project/game-model/inventory/Item.ts
@@ -0,0 +1,7 @@
+import {ModelComponent} from "../ModelComponent";
+import {ItemGroup} from "./ItemGroup";
+
+export class Item extends ModelComponent {
+
+  inheritedGroups: ItemGroup[] = []
+}
diff --git a/src/app/project/game-model/inventory/ItemGroup.ts b/src/app/project/game-model/inventory/ItemGroup.ts
new file mode 100644
index 0000000..ab21f62
--- /dev/null
+++ b/src/app/project/game-model/inventory/ItemGroup.ts
@@ -0,0 +1,7 @@
+import {ModelComponent} from "../ModelComponent";
+import {ItemQuality} from "./ItemQuality";
+
+export abstract class ItemGroup extends ModelComponent {
+
+  requiredItemQualities: ItemQuality[] = []
+}
diff --git a/src/app/project/game-model/inventory/ItemQuality.ts b/src/app/project/game-model/inventory/ItemQuality.ts
new file mode 100644
index 0000000..fa6abe1
--- /dev/null
+++ b/src/app/project/game-model/inventory/ItemQuality.ts
@@ -0,0 +1,10 @@
+export class ItemQuality {
+
+  key: string
+  value: number
+
+  constructor(key: string, value: number) {
+    this.key = key;
+    this.value = value;
+  }
+}