diff --git a/src/Core/Crawl/iitem.cpp b/src/Core/Crawl/iitem.cpp
index 715c39a..79839bd 100644
--- a/src/Core/Crawl/iitem.cpp
+++ b/src/Core/Crawl/iitem.cpp
@@ -84,6 +84,14 @@ bool IItem::isActive(int item) {
     return _childs.contains(item) && _activeItems.contains(item);
 }
 
+const Store *IItem::store() const {
+    return _store;
+}
+
+void IItem::setStore(const Store *newStore) {
+    _store = newStore;
+}
+
 unsigned int IItem::itemType() {
     if (_typeItem) {
         return _typeItem;
diff --git a/src/Core/Crawl/iitem.h b/src/Core/Crawl/iitem.h
index 9f9d437..17b80f3 100644
--- a/src/Core/Crawl/iitem.h
+++ b/src/Core/Crawl/iitem.h
@@ -14,6 +14,7 @@
 #include <QString>
 #include "global.h"
 
+
 /**
  * @brief IITEM_OBJECT This macross init the item id for child IItem classes.
  * For each items with this macross automaticly added two method:
@@ -29,6 +30,8 @@
 
 namespace CRAWL {
 
+class Store;
+
 /**
  * @brief The ChildIteAction struct contains two lambda function with actions for remove and add item to a parent item.
  * The parent can be run any actions when item added or dropped.
@@ -227,11 +230,28 @@ public:
      */
     bool isActive(int item);
 
+    /**
+     * @brief store This mrthod sets pointer value of the global store object.
+     *  Usualy this method invoked in the Store::addLevel method. (when item adding into store).
+     *  @param newStore This is new pinter value of the store object.
+     */
+    void setStore(const Store *newStore);
+
+protected:
+
+    /**
+     * @brief store This method return pointer to the store object.
+     * @return pointer to curent store object. If object is not initialized on the global store then return nullptr
+     */
+    const Store *store() const;
+
+
 private:
     unsigned int _id = 0;
     unsigned int _typeItem = 0;
     QHash<int, ChildItemAction> _childs;
     QSet<int> _activeItems;
+    const Store *_store = nullptr;
 
 };
 
diff --git a/src/Core/Crawl/ipreviewscaneworld.cpp b/src/Core/Crawl/ipreviewscaneworld.cpp
index 87fdb27..b3cd3d4 100644
--- a/src/Core/Crawl/ipreviewscaneworld.cpp
+++ b/src/Core/Crawl/ipreviewscaneworld.cpp
@@ -10,9 +10,7 @@
 
 namespace CRAWL {
 
-IPreviewScaneWorld::IPreviewScaneWorld(const IWorld* mainWorld) {
-    debug_assert(mainWorld, "The mainWorld world option should be initialized.");
-    _mainWorld = mainWorld;
+IPreviewScaneWorld::IPreviewScaneWorld() {
 
     setCameraReleativePosition({0, 100, 100});
     setCameraRotation(QQuaternion::fromEulerAngles(-40,0,0));
@@ -42,14 +40,12 @@ int IPreviewScaneWorld::requiredTier() const {
     return 0;
 }
 
-PlayableObject *IPreviewScaneWorld::initPlayer(int objectType) const {
-    return _mainWorld->initPlayer(objectType);
-}
-
 bool IPreviewScaneWorld::start(const StartData& config) {
     _configuration = config;
 
-    setPlayer(initPlayer(config.snakeType()));
+    if (!setPlayer(config.snakeType())) {
+        return false;
+    };
 
     worldChanged(worldRules()->cbegin());
     setTargetFps(60);
diff --git a/src/Core/Crawl/ipreviewscaneworld.h b/src/Core/Crawl/ipreviewscaneworld.h
index afedd26..1e19f84 100644
--- a/src/Core/Crawl/ipreviewscaneworld.h
+++ b/src/Core/Crawl/ipreviewscaneworld.h
@@ -23,7 +23,7 @@ public:
      * @brief IPreviewScaneWorld This is main constructo of the preview world model.
      * @param mainWorld This pointer to the main world. This is needed for correctly working initPalayer methods. The implementation of the some methods should be identy with the main world.
      */
-    IPreviewScaneWorld(const IWorld* mainWorld);
+    IPreviewScaneWorld();
 
     // IItem interface
 public:
@@ -33,7 +33,6 @@ public:
     QString image() const override final;
     int cost() const override final;
     int requiredTier() const override final;
-    PlayableObject *initPlayer(int objectType) const override final;
     void initControl(IControl *control) override;
     IControl* initUserInterface() const override;
     bool start(const StartData &config) override;
diff --git a/src/Core/Crawl/iworld.cpp b/src/Core/Crawl/iworld.cpp
index 0aed561..4db6d89 100644
--- a/src/Core/Crawl/iworld.cpp
+++ b/src/Core/Crawl/iworld.cpp
@@ -22,6 +22,7 @@
 #include "eventserver.h"
 #include "player.h"
 #include <QtConcurrent>
+#include "store.h"
 
 namespace CRAWL {
 
@@ -39,7 +40,11 @@ IWorld::IWorld() {
 
 IWorld::~IWorld() {
     disconnect();
-    reset();
+
+    IWorld::stop();
+
+    clear();
+
     delete _eventServer;
 }
 
@@ -102,15 +107,18 @@ bool IWorld::start(const StartData& config) {
 
     auto player = dynamic_cast<Player*>(userInterface());
     if (!player) {
-        QuasarAppUtils::Params::log("Failed to start world. T userIterface control should be children class of the Palyer class",
+        QuasarAppUtils::Params::log("Failed to start world. The userIterface control should be children class of the Palyer class",
                                     QuasarAppUtils::Error);
 
         return false;
     }
 
-    setWorldStatus(WorldStatus::Game);
     backgroundAI()->stopAI();
-    setPlayer(initPlayer(config.snakeType()));
+    setWorldStatus(WorldStatus::Game);
+
+    if (!setPlayer(config.snakeType())) {
+        return false;
+    }
 
     player->setUserData(config.player());
 
@@ -151,6 +159,21 @@ void IWorld::setPlayer(QObject *newPlayer) {
     emit playerChanged();
 }
 
+bool IWorld::setPlayer(int snakeId) {
+    auto snake = dynamic_cast<PlayableObject*>(store()->getItemById(snakeId));
+
+    if (!snake) {
+        QuasarAppUtils::Params::log("Failed to start world. The snake should be not null",
+                                    QuasarAppUtils::Error);
+        return false;
+
+    }
+
+    setPlayer(snake);
+
+    return true;
+}
+
 IWorldItem *IWorld::generate(const QString &objectType) const {
     return _registeredTypes.value(objectType, [](){return nullptr;}).operator()();
 }
@@ -248,14 +271,7 @@ void IWorld::removeItem(IWorldItem* item, QList<int> *removedObjectsList) {
     emit sigOBjctsListChanged(diff);
 }
 
-void IWorld::reset() {
-
-    stop();
-
-    if (_player) {
-        _player = nullptr;
-    }
-
+void CRAWL::IWorld::clear() {
     if (_worldRules) {
         delete _worldRules;
         _worldRules = nullptr;
@@ -270,9 +286,18 @@ void IWorld::reset() {
         delete _backgroundAI;
         _backgroundAI = nullptr;
     }
+}
 
+void IWorld::reset() {
+
+    stop();
+
+    if (_player) {
+        _player = nullptr;
+    }
+
+    clear();
     setHdr("");
-
 }
 
 
diff --git a/src/Core/Crawl/iworld.h b/src/Core/Crawl/iworld.h
index e6a1cd1..3822c3f 100644
--- a/src/Core/Crawl/iworld.h
+++ b/src/Core/Crawl/iworld.h
@@ -84,15 +84,6 @@ public:
     IWorld();
     ~IWorld() override;
 
-    /**
-     * @brief initPlayer The implementation of This interface must be return playerObject by type. This method should be generate new object of the player by type.
-     * @param objectType This is type of requried snake object. See the IItem::itemId method.
-     * @return raw pointer to the player object.
-     * @note The Palyer object will be deleted when wold distroed.
-     *  So do not delete your created player pbject yuorself.
-     */
-    virtual PlayableObject* initPlayer(int objectType) const = 0;
-
     QString itemTextType() const override;
 
     /**
@@ -334,6 +325,12 @@ protected:
      */
     void setPlayer(QObject *newPlayer);
 
+    /**
+     * @brief setPlayer This method sets new player object by snake id.
+     * @param snakeId This is snake object id that user will be control.
+     */
+    bool setPlayer(int snakeId);
+
     /**
      * @brief generate This method shold be generate object from the  @a objectType.
      *  Override this method for add support yourown objects.
@@ -546,6 +543,9 @@ private:
                                 QList<int>* removedObjectsList = nullptr);
 
     void renderLoop();
+
+    void clear();
+
     QFuture<void> _renderLoopFuture;
 
     EventServer * _eventServer = nullptr;
diff --git a/src/Core/private/engine.cpp b/src/Core/private/engine.cpp
index 7be0bff..ff85d66 100644
--- a/src/Core/private/engine.cpp
+++ b/src/Core/private/engine.cpp
@@ -19,12 +19,12 @@
 #include "Crawl/icontrol.h"
 #include "QDateTime"
 #include "QtConcurrent"
-#include "store.h"
+#include "offlinestore.h"
 
 namespace CRAWL {
 
 Engine::Engine(QObject *parent): QObject(parent) {
-    _store = new Store();
+    _store = new OfflineStore();
     _menu = new MainMenuModel();
 
     setNewUser(new User());
@@ -223,24 +223,20 @@ User *Engine::currentUser() const {
 }
 
 void Engine::init() {
-    QMultiHash<int, const IItem *> availabelItems;
+    QList<int> availableWorlds;
 
     for (const auto &data : qAsConst(_availableLvls)) {
-        if (data && data->world())
-            availabelItems.unite(data->world()->childItemsRecursive());
-    }
+        if (data && data->world()) {
+            if (data->world()->itemType() == IWorld::type() && _currentUser->isUnlocked(data->world()->itemId())) {
+                availableWorlds.push_back(data->world()->itemId());
+            }
 
-    _store->init(availabelItems);
-    static_cast<StoreViewModel*>(_menu->storeView())->init(_store, _currentUser);
-
-    QList<int> availableWorlds;
-    for (int id : _currentUser->unlockedItems()) {
-        auto item = availabelItems.value(id);
-        if (item->itemType() == IWorld::type()) {
-            availableWorlds.push_back(item->itemId());
+            _store->addLevel(data);
         }
     }
 
+    static_cast<StoreViewModel*>(_menu->storeView())->init(_store, _currentUser);
+
 #define selectedLevelModel static_cast<AvailableLevelsModel*>(_menu->selectLevelModle())
     selectedLevelModel->setStore(_store);
     selectedLevelModel->setKeys(availableWorlds);
diff --git a/src/Core/private/offlinestore.cpp b/src/Core/private/offlinestore.cpp
index fc4af0e..0343acb 100644
--- a/src/Core/private/offlinestore.cpp
+++ b/src/Core/private/offlinestore.cpp
@@ -16,9 +16,15 @@ OfflineStore::OfflineStore() {
 
 }
 
-void OfflineStore::init(const ILevel *level) {
-    store().unite(level->availableItems());
+void OfflineStore::addLevel(const ILevel *level) {
+
+    for (auto item : qAsConst(level->availableItems())) {
+        item->setStore(this);
+        store().insert(item->itemId(), item);
+    }
+
     store().insert(level->world()->itemId(), level->world());
+    level->world()->setStore(this);
 }
 
 }
diff --git a/src/Core/private/offlinestore.h b/src/Core/private/offlinestore.h
index a8f20f7..caa6fee 100644
--- a/src/Core/private/offlinestore.h
+++ b/src/Core/private/offlinestore.h
@@ -20,7 +20,7 @@ class OfflineStore : public Store
 public:
     OfflineStore();
 
-    void init(const ILevel *level) override;
+    void addLevel(const ILevel *level) override;
 };
 
 }
diff --git a/src/Core/private/store.cpp b/src/Core/private/store.cpp
index 11978de..e8f3c0c 100644
--- a/src/Core/private/store.cpp
+++ b/src/Core/private/store.cpp
@@ -34,7 +34,7 @@ bool Store::buy(User &buyer, int itemId) {
     return true;
 }
 
-const IItem *Store::getItemById(int id) const {
+IItem *Store::getItemById(int id) const {
     return _store.value(id, nullptr);
 }
 
diff --git a/src/Core/private/store.h b/src/Core/private/store.h
index 9428e8a..af2a3e9 100644
--- a/src/Core/private/store.h
+++ b/src/Core/private/store.h
@@ -33,17 +33,17 @@ public:
     bool buy(User& buyer, int itemId);
 
     /**
-     * @brief init This method initialise store of the game.
+     * @brief addLevel This method add level objects to store.
      * @return true if the items inited successfuly else false.
      */
-    virtual void init(const ILevel* level) = 0;
+    virtual void addLevel(const ILevel* level) = 0;
 
     /**
      * @brief getItemById This method return item by id.
      * @param id This is id of the required item.
      * @return pointer to item. if The item with @a id not found then return nullptr.
      */
-    const IItem* getItemById(int id) const;
+    IItem* getItemById(int id) const;
 
     /**
      * @brief size This method return count of the available items in store.
diff --git a/src/CrawlAbstractLvl/abstractlevel.cpp b/src/CrawlAbstractLvl/abstractlevel.cpp
index 69329bf..2ef995f 100644
--- a/src/CrawlAbstractLvl/abstractlevel.cpp
+++ b/src/CrawlAbstractLvl/abstractlevel.cpp
@@ -8,13 +8,15 @@
 #include "abstractlevel.h"
 #include "abslvlworld.h"
 
+#include <abslvlsnake.h>
 #include <absnest.h>
 
 AbstractLevel::AbstractLevel() {
     initAbstractLvlResources();
 
-    auto world = new AbstractLvl::AbsLvlWorld();
-    setWorld(world);
-    setPreviewScane(new AbstractLvl::AbsNest(world));
+    setWorld(new AbstractLvl::AbsLvlWorld());
+    setPreviewScane(new AbstractLvl::AbsNest());
+
+    addItem(new AbstractLvl::AbsLvlSnake);
 }
 
diff --git a/src/CrawlAbstractLvl/private/abslvlworld.cpp b/src/CrawlAbstractLvl/private/abslvlworld.cpp
index 5d36d6c..cbe5298 100644
--- a/src/CrawlAbstractLvl/private/abslvlworld.cpp
+++ b/src/CrawlAbstractLvl/private/abslvlworld.cpp
@@ -23,10 +23,6 @@ AbsLvlWorld::AbsLvlWorld() {
     setCameraRotation(QQuaternion::fromEulerAngles({0,0,0}));
 }
 
-CRAWL::PlayableObject *AbsLvlWorld::initPlayer(int) const {
-    return new AbsLvlSnake();
-}
-
 CRAWL::WorldRule *AbsLvlWorld::initWorldRules() {
 
     return new CRAWL::WorldRule {
diff --git a/src/CrawlAbstractLvl/private/abslvlworld.h b/src/CrawlAbstractLvl/private/abslvlworld.h
index 0927625..48d5ff9 100644
--- a/src/CrawlAbstractLvl/private/abslvlworld.h
+++ b/src/CrawlAbstractLvl/private/abslvlworld.h
@@ -19,7 +19,6 @@ public:
 
     AbsLvlWorld();
 
-    CRAWL::PlayableObject *initPlayer(int type) const override;
     CRAWL::WorldRule *initWorldRules() override;
     QString initHdrBackGround() const override;
     QString description() const override;
diff --git a/src/CrawlAbstractLvl/private/absnest.cpp b/src/CrawlAbstractLvl/private/absnest.cpp
index dfa0994..24f023b 100644
--- a/src/CrawlAbstractLvl/private/absnest.cpp
+++ b/src/CrawlAbstractLvl/private/absnest.cpp
@@ -12,7 +12,7 @@
 
 namespace AbstractLvl {
 
-AbsNest::AbsNest(IWorld * mainWorld): CRAWL::IPreviewScaneWorld(mainWorld) {
+AbsNest::AbsNest(): CRAWL::IPreviewScaneWorld() {
 
 }
 
diff --git a/src/CrawlAbstractLvl/private/absnest.h b/src/CrawlAbstractLvl/private/absnest.h
index ae61e1d..1ecc589 100644
--- a/src/CrawlAbstractLvl/private/absnest.h
+++ b/src/CrawlAbstractLvl/private/absnest.h
@@ -19,7 +19,7 @@ namespace AbstractLvl {
 class AbsNest: public CRAWL::IPreviewScaneWorld
 {
 public:
-    AbsNest(IWorld *mainWorld);
+    AbsNest();
 
     // IWorld interface
 public:
diff --git a/src/CrawlTestLvl/private/nest.cpp b/src/CrawlTestLvl/private/nest.cpp
index b7f2ff5..a45dd67 100644
--- a/src/CrawlTestLvl/private/nest.cpp
+++ b/src/CrawlTestLvl/private/nest.cpp
@@ -16,7 +16,7 @@
 
 namespace TestLvl {
 
-Nest::Nest(IWorld *mainWorld): CRAWL::IPreviewScaneWorld(mainWorld) {
+Nest::Nest(): CRAWL::IPreviewScaneWorld() {
 
 }
 
diff --git a/src/CrawlTestLvl/private/nest.h b/src/CrawlTestLvl/private/nest.h
index a4b56e5..a2bdb44 100644
--- a/src/CrawlTestLvl/private/nest.h
+++ b/src/CrawlTestLvl/private/nest.h
@@ -17,7 +17,7 @@ namespace TestLvl {
 class Nest: public CRAWL::IPreviewScaneWorld
 {
 public:
-    Nest(IWorld* mainWorld);
+    Nest();
 
     // IWorld interface
 public:
diff --git a/src/CrawlTestLvl/private/world.cpp b/src/CrawlTestLvl/private/world.cpp
index 1193296..222ba06 100644
--- a/src/CrawlTestLvl/private/world.cpp
+++ b/src/CrawlTestLvl/private/world.cpp
@@ -25,8 +25,6 @@ namespace TestLvl {
 World::World() {
     setCameraReleativePosition({50,0,100});
     setCameraRotation(QQuaternion::fromEulerAngles({0,0,0}));
-
-    addChildItem();
 }
 
 CRAWL::WorldRule *World::initWorldRules() {
@@ -75,10 +73,6 @@ void World::initControl(CRAWL::IControl *control) {
     return IWorld::initControl(control);
 }
 
-CRAWL::PlayableObject *World::initPlayer(int) const {
-    return new TestSnake();
-}
-
 CRAWL::IAI *World::initBackGroundAI() const {
     return IWorld::initBackGroundAI();
 }
diff --git a/src/CrawlTestLvl/private/world.h b/src/CrawlTestLvl/private/world.h
index e376fb0..1a4c0ab 100644
--- a/src/CrawlTestLvl/private/world.h
+++ b/src/CrawlTestLvl/private/world.h
@@ -28,7 +28,6 @@ public:
     int cost() const override;
     CRAWL::IControl *initUserInterface() const override;
     void initControl(CRAWL::IControl *control) override;
-    CRAWL::PlayableObject *initPlayer(int type) const override;
     CRAWL::IAI *initBackGroundAI() const override;
     QString itemTextId() const override;
     int requiredTier() const override;
diff --git a/src/CrawlTestLvl/testlevel.cpp b/src/CrawlTestLvl/testlevel.cpp
index f1cb04d..2639e49 100644
--- a/src/CrawlTestLvl/testlevel.cpp
+++ b/src/CrawlTestLvl/testlevel.cpp
@@ -8,10 +8,13 @@
 #include "testlevel.h"
 #include "world.h"
 #include "nest.h"
+#include "testsnake.h"
 
 TestLevel::TestLevel() {
     initTestLvlResources();
-    auto world = new TestLvl::World();
-    setWorld(world);
-    setPreviewScane(new TestLvl::Nest(world));
+    setWorld(new TestLvl::World());
+    setPreviewScane(new TestLvl::Nest());
+
+    addItem(new TestLvl::TestSnake());
+
 }
diff --git a/src/JungleLvl/jungle.cpp b/src/JungleLvl/jungle.cpp
index cddf393..85bddb3 100644
--- a/src/JungleLvl/jungle.cpp
+++ b/src/JungleLvl/jungle.cpp
@@ -10,12 +10,13 @@
 #include "world.h"
 #include "nest.h"
 
+#include "snake.h"
+
 Jungle::Jungle() {
     initJungleLvlResources();
+    setWorld(new JungleLvl::World());
 
-    auto world = new JungleLvl::World();
+    setPreviewScane(new JungleLvl::Nest());
 
-    setWorld(world);
-
-    setPreviewScane(new JungleLvl::Nest(world));
+    addItem(new JungleLvl::Snake());
 }
diff --git a/src/JungleLvl/private/nest.cpp b/src/JungleLvl/private/nest.cpp
index fb44087..554900a 100644
--- a/src/JungleLvl/private/nest.cpp
+++ b/src/JungleLvl/private/nest.cpp
@@ -16,7 +16,7 @@
 
 namespace JungleLvl {
 
-Nest::Nest(IWorld *mainWorld): CRAWL::IPreviewScaneWorld(mainWorld) {
+Nest::Nest(): CRAWL::IPreviewScaneWorld() {
 
 }
 
diff --git a/src/JungleLvl/private/nest.h b/src/JungleLvl/private/nest.h
index 12e8f30..83972b7 100644
--- a/src/JungleLvl/private/nest.h
+++ b/src/JungleLvl/private/nest.h
@@ -17,7 +17,7 @@ namespace JungleLvl {
 class Nest:  public CRAWL::IPreviewScaneWorld
 {
 public:
-    Nest(IWorld *mainWorld);
+    Nest();
 
     // IWorld interface
 public:
diff --git a/src/JungleLvl/private/world.cpp b/src/JungleLvl/private/world.cpp
index 7005a19..4341a18 100644
--- a/src/JungleLvl/private/world.cpp
+++ b/src/JungleLvl/private/world.cpp
@@ -108,10 +108,6 @@ void World::initControl(CRAWL::IControl *control) {
     return IWorld::initControl(control);
 }
 
-CRAWL::PlayableObject *World::initPlayer(int) const {
-    return new Snake();
-}
-
 CRAWL::IAI *World::initBackGroundAI() const {
     return IWorld::initBackGroundAI();
 }
diff --git a/src/JungleLvl/private/world.h b/src/JungleLvl/private/world.h
index cebe5e7..4aff0b5 100644
--- a/src/JungleLvl/private/world.h
+++ b/src/JungleLvl/private/world.h
@@ -28,7 +28,6 @@ public:
     int cost() const override;
     CRAWL::IControl *initUserInterface() const override;
     void initControl(CRAWL::IControl *control) override;
-    CRAWL::PlayableObject *initPlayer(int) const override;
     CRAWL::IAI *initBackGroundAI() const override;
     QString itemTextId() const override;
     int requiredTier() const override;
diff --git a/tests/units/clasterstest.cpp b/tests/units/clasterstest.cpp
index d9baa3a..61133dc 100644
--- a/tests/units/clasterstest.cpp
+++ b/tests/units/clasterstest.cpp
@@ -45,7 +45,6 @@ public:
 
     // IWorld interface
 public:
-    CRAWL::PlayableObject *initPlayer(int) const override {return nullptr;};
     CRAWL::WorldRule *initWorldRules() override {return nullptr;};
     QString initHdrBackGround() const override {return "";};
     QString description() const override {return "";};