diff --git a/src/app/game-model/fs/ProcessLoadedProject.ts b/src/app/game-model/fs/ProcessLoadedProject.ts
index 0d379df..b6fe4d1 100644
--- a/src/app/game-model/fs/ProcessLoadedProject.ts
+++ b/src/app/game-model/fs/ProcessLoadedProject.ts
@@ -8,15 +8,26 @@ import {SimpleGamesystemParser} from "./parser/SimpleGamesystemParser";
 import {SimpleGamesystem} from "../gamesystems/SimpleGamesystem";
 import {ProductGamesystem} from "../gamesystems/ProductGamesystem";
 import {ProductGamesystemParser} from "./parser/ProductGamesystemParser";
+import {Gamesystem} from "../gamesystems/Gamesystem";
 
 export class ProcessLoadedProject {
 
   static processLoadedProject(loadedProject: LoadedProject): GameModel {
     const gameModel = new GameModel(loadedProject.projectName);
     loadedProject.loadedModels.forEach(loadedModel => this.processLoadedModel(gameModel, loadedModel))
+    //Generate product Gamesystems
+    this.generateProductGamesystems(gameModel.gamesystems)
     return gameModel;
   }
 
+  static generateProductGamesystems(gamesystems: Gamesystem<any, any>[]) {
+    gamesystems.forEach(gamesystem => {
+      if(gamesystem instanceof ProductGamesystem) {
+        gamesystem.generateFromChildsystems();
+      }
+    })
+  }
+
   static processLoadedModel(gameModel: GameModel, loadedModel: LoadModel) {
     switch (loadedModel.modelType) {
       case ModelComponentType.SCRIPTACCOUNT: this.processLoadedScriptAccount(gameModel, loadedModel); break;
diff --git a/src/app/game-model/gamesystems/ProductGamesystem.ts b/src/app/game-model/gamesystems/ProductGamesystem.ts
index b81b194..7795942 100644
--- a/src/app/game-model/gamesystems/ProductGamesystem.ts
+++ b/src/app/game-model/gamesystems/ProductGamesystem.ts
@@ -65,10 +65,25 @@ export class ProductGamesystem extends Gamesystem<ProductState, ProductTransitio
 
   generateFromChildsystems() {
     //Assume that childsystems that are productsystems are already generated
+    if(this.innerGamesystems.length < 2) {
+      //currently only safe-guard
+      return;
+    }
+
     const integratedSystems: Gamesystem<any, any>[] = [this.innerGamesystems[0], this.innerGamesystems[1]];
+    if(this.innerGamesystems[0] instanceof ProductGamesystem) {
+      this.innerGamesystems[0].generateFromChildsystems();
+    }
+
+    if(this.innerGamesystems[1] instanceof ProductGamesystem) {
+      this.innerGamesystems[1].generateFromChildsystems();
+    }
     let gamesystem: ProductGamesystem  = ProductGamesystem.generateFromChildsystems(this.innerGamesystems[0], this.innerGamesystems[1], false, integratedSystems);
 
     for(let i=2; i<this.innerGamesystems.length; i++) {
+      if(this.innerGamesystems[i] instanceof ProductGamesystem) {
+        (this.innerGamesystems[i] as ProductGamesystem).generateFromChildsystems();
+      }
       integratedSystems.push(this.innerGamesystems[i]);
       gamesystem = ProductGamesystem.generateFromChildsystems(gamesystem, this.innerGamesystems[i], true, integratedSystems);
     }