diff --git a/src/components/InteractiveObjects/InteractiveObject.js b/src/components/InteractiveObjects/InteractiveObject.js
index 25f946e..a70fbfe 100644
--- a/src/components/InteractiveObjects/InteractiveObject.js
+++ b/src/components/InteractiveObjects/InteractiveObject.js
@@ -1,4 +1,5 @@
-import { Group, EventDispatcher, MeshStandardMaterial, Mesh, SphereGeometry } from "three";
+import { Group, MeshStandardMaterial, Mesh, SphereGeometry, Vector3 } from "three";
+import { EventManager } from '@/lib/EventManager';
 
 import { GenericObject } from "./GenenricObject";
 import { TextObject } from "./TextObject";
@@ -15,16 +16,17 @@ import { ClassicPuzzle } from "./ClassicPuzzle";
 // import { Game6 } from "./games/Game6";
 import { MazeQuizGame } from "./MazeQuizGame/MazeQuizGame";
 import { Particles } from "./Particles";
-import { assignMaterial, assignParams, wrapInGroup, getBoundingBoxMaxLength } from "@/lib/MeshUtils";
-import { GameEngine } from "@/lib/GameEngine";
+import { SceneSwitcher } from "./SceneSwitcher";
+import { assignParams, wrapInGroup, getBoundingBoxMaxLength } from "@/lib/MeshUtils";
+import { GameEngine  } from "@/lib/GameEngine";
 
 const InteractiveObjectsImports = { 
-    GenericObject, CharacterObject, TextObject, ImageObject, GltfObject, VideoPlayer, Particles,
+    GenericObject, CharacterObject, TextObject, ImageObject, GltfObject, VideoPlayer, Particles, SceneSwitcher,
     PuzzleGame1, PuzzleGame2, PuzzleGame4, MazeQuizGame, ClassicPuzzle
 };
 
-class InteractiveObject extends EventDispatcher{
-    constructor(gameEngine, obj) {
+class InteractiveObject extends EventManager{
+    constructor(engine, obj) {
         super();
         this.name = obj.name;
         return new Promise(async (resolve, reject) => {
@@ -32,7 +34,7 @@ class InteractiveObject extends EventDispatcher{
                 case 'Group':
                     this.object = new Group();
                     for (let g of obj.group){
-                        let gameMesh = await new InteractiveObject(gameEngine, g);
+                        let gameMesh = await new InteractiveObject(engine, g);
                         this.object.add(gameMesh.object);
                     }
                     break;
@@ -47,38 +49,72 @@ class InteractiveObject extends EventDispatcher{
                 case 'MazeQuizGame':
                 case 'ClassicPuzzle':
                 case 'Particles':
-                    this.io = await new InteractiveObjectsImports[obj.type](gameEngine, obj);
+                case 'SceneSwitcher':
+                    this.io = await new InteractiveObjectsImports[obj.type](engine, obj);
                     this.source = this.io.source || this.io;
                     this.object = this.io.object;
                     this.emits = this.io.emits;
-                    this.io.emits?.forEach(event=>{
-                        this.io.addEventListener?.(event, this.dispatchEvent.bind(this))
-                    })
+                    // this.io.emits?.forEach(event=>{
+                    //     this.io.addEventListener?.(event, this.dispatchEvent.bind(this))
+                    // })
+                    this.io.forwardEvents?.(this);
                     break;
             }
             if (obj.shouldBeLocked){
                 this.object = wrapInGroup(this.object)
-                this.locker = new Locker(gameEngine, this.object);
-                this.locker.lock();
+                this.activator = new (obj.activationType == 'unlock' ? LockActivator : VisibilityActivator)(engine, this.object);
+                this.activator.deactivate();
             }
             assignParams(this.object, obj);
             if (obj.motion){
-                gameEngine.motionQueue.add({
+                engine.motionQueue.add({
                     o: this.object, ...obj.motion
                 });
             }
+            
+            if (obj.distance) {
+                const o = this.object;
+                let dstm = obj.distance;
+                let v = new Vector3();
+                o.visible = false;
+                engine.addEventListener('beforeRender', function () {
+                    o.getWorldPosition(v);
+                    var dst = engine.camera.position.distanceTo(v);
+                    if (dst <= dstm && !o.visible) {
+                        o.visible = true;
+                    }else if (dst > dstm && o.visible){
+                        o.visible = false;
+                    }
+                });
+            }
             resolve(this);
         });
     }
 }
 
-class Locker{
+class VisibilityActivator{
+    constructor(engine, group){
+        this.deactivate = function(){
+            group.visible = false;
+            group.__active = false;
+        }
+        this.activate = function(){
+            group.visible = true;
+            group.__active = true;
+        }
+        this.isActive = function(){
+            return group.__active;
+        }
+    }
+}
+
+class LockActivator{
     static materialLocked = new MeshStandardMaterial({
         transparent: true, opacity:1, color: 0xaaaaaa
     })
     constructor(engine, group){
         const bckGeometry = new SphereGeometry(getBoundingBoxMaxLength(group.userData.bbox)/2,8,8)
-        const bckMesh = new Mesh(bckGeometry, Locker.materialLocked);
+        const bckMesh = new Mesh(bckGeometry, LockActivator.materialLocked);
         bckMesh.visible = false;
         group.add(bckMesh)
         function animate(){
@@ -91,24 +127,29 @@ class Locker{
             )
         }
         this.object = bckMesh;
-        this.lock = function(){
+        this.deactivate = function(){
             bckMesh.visible = true;
             //bckMesh.material.needsUpdate = true;
             engine.motionQueue.clear(bckMesh);
-            group.__locked = true;
+            group.__active = false;
             animate();
         }
-        this.unlock = function(){
+        this.activate = function(){
             bckMesh.visible = false;
             engine.motionQueue.clear(bckMesh);
-            group.__locked = false;
+            group.__active = true;
+        }
+        this.isActive = function(){
+            return group.__active;
         }
     }
 }
-GameEngine.loadTexture('locked.webp', '/static/textures/', null, [Locker.materialLocked, 'alphaMap'])
+GameEngine.loadTexture('locked.webp', '/static/textures/', null, [LockActivator.materialLocked, 'alphaMap'])
 
 const InteractiveObjectTypes = [
     {
+        id: 'GenericObject', name: 'Generic Game Object'
+    },{
         id: 'CharacterObject', name: 'Character'
     }, {
         id: 'PuzzleGame1', name: 'Puzzle Game 1'
@@ -122,6 +163,8 @@ const InteractiveObjectTypes = [
         id: 'VideoPlayer', name: 'Video Player'
     },{
         id: 'Particles', name: 'Particles'
+    },{
+        id: 'SceneSwitcher', name: 'Scene Switcher'
     }
 ];
 
diff --git a/src/components/InteractiveObjects/MazeQuizGame/MazeObject.js b/src/components/InteractiveObjects/MazeQuizGame/MazeObject.js
index 795a5a8..50dad0e 100644
--- a/src/components/InteractiveObjects/MazeQuizGame/MazeObject.js
+++ b/src/components/InteractiveObjects/MazeQuizGame/MazeObject.js
@@ -126,6 +126,7 @@ class MazeObject {
                 go.object.scale.multiplyScalar(wallSize)
                 go.object.position.multiplyScalar(wallSize)
                 go.object.applyMatrix4(def.matrix);
+                go.forwardEvents?.(params.io);
                 root.add(go.object);
             });
             
diff --git a/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js b/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js
index bd89212..38b41c7 100644
--- a/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js
+++ b/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js
@@ -1,6 +1,6 @@
 import { MazeObject } from "./MazeObject";
 import Utils from "@/lib/Utils";
-import { EventDispatcher } from "three";
+import { EventManager } from '@/lib/EventManager';
 
 const params = {
     scale: 3,
@@ -17,7 +17,7 @@ const imgParams = {
 }
 
 const textParams = {
-    type: 'TextObject', width:0.44,
+    type: 'TextObject', maxWidth:0.44,
     fontPath:'/static/fonts/Montserrat-Regular.ttf', 
     fontSize:0.025, distance: params.wallSize*2
 }
@@ -37,12 +37,14 @@ const defaults = {
 
 const tl = 4;
 
-class MazeQuizGame extends EventDispatcher {
-    emits = ['finish']
+class MazeQuizGame extends EventManager {
+    emits = ['finish', 'sceneSwitch']
     constructor(engine, data) {
         super();
+        this.data = data;
         data.noPhysics = true;
         params.mazeFile = data.style || 'quiz-s2.gltf';
+        params.io = this;
         return new Promise(async (resolve, reject)=>{
             let questions = data.shuffle ? Utils.shuffleArray(data.questions) : data.questions;
             let def = this.generate(questions);
@@ -101,11 +103,16 @@ class MazeQuizGame extends EventDispatcher {
             len,
             userData: { finish: true },
             objects:[
+                // {
+                //     type: 'GltfObject',
+                //     position:[0,.22,len + .52], scale: [0.33, 0.33, 0.33], rotation: [0, Math.PI/4, 0],
+                //     value: 'trophy.glb', path: imgParams.path, distance: params.wallSize*2,
+                //     motion: { a:{rotation: { y: k=>k*Math.PI*2 }}, r: true, t: 4 }
+                // }
                 {
-                    type: 'GltfObject',
-                    position:[0,.22,len + .52], scale: [0.33, 0.33, 0.33], rotation: [0, Math.PI/4, 0],
-                    value: 'trophy.glb', path: imgParams.path, distance: params.wallSize*2,
-                    motion: { a:{rotation: { y: k=>k*Math.PI*2 }}, r: true, t: 4 }
+                    type: 'SceneSwitcher', switchScene: this.data.switchScene, switchType: this.data.switchType,
+                    position:[0,.22,len + .52], scale: [0.33, 0.33, 0.33], 
+                    distance: params.wallSize*2
                 }
             ]
         };
@@ -116,7 +123,7 @@ class MazeQuizGame extends EventDispatcher {
             len, userData: { question, qid },
             objects:[
                 {
-                    ...textParams, text: question.q, fontSize:0.033, width:0.55, position:[0,.55,len + .96], rotation:[0,Math.PI, 0]
+                    ...textParams, text: question.q, fontSize:0.033, maxWidth:0.55, position:[0,.55,len + .96], rotation:[0,Math.PI, 0]
                 }
             ]
         }
@@ -149,7 +156,7 @@ class MazeQuizGame extends EventDispatcher {
                         len: 3,
                         objects:[
                             {
-                                ...textParams, color:0xc71414, text: question.h, fontSize:0.033, width:0.66, position:[0,.44,3+.96], rotation:[0,Math.PI, 0]
+                                ...textParams, color:0xc71414, text: question.h, fontSize:0.033, maxWidth:0.66, position:[0,.44,3+.96], rotation:[0,Math.PI, 0]
                             },{
                                 ...imgParams, value:'x.webp', position:[0,.33,3+.96], rotation:[0,Math.PI, 0]
                             }
diff --git a/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.vue b/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.vue
index 3ace2c1..8055afa 100644
--- a/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.vue
+++ b/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.vue
@@ -39,10 +39,13 @@
     <v-checkbox v-model="modelValue.shuffle" hide-details label="Shuffle questions"></v-checkbox>
     <v-number-input density="compact" label="Correct answer points" v-model="modelValue.questionPoints"></v-number-input>
     <v-number-input density="compact" label="Wrong answer penalty points" v-model="modelValue.questionPenalty"></v-number-input>
-    <v-select v-model="modelValue.style" :items="styles" density="compact" label="VIsual style"></v-select>
+    <v-select v-model="modelValue.style" :items="styles" density="compact" label="Visual style"></v-select>
+    <SceneSwitcher v-model="mv"></SceneSwitcher>
 </template>
 
 <script>
+import SceneSwitcher from '../SceneSwitcher.vue';
+
 export default {
     props:['modelValue'],
     data(){
@@ -61,6 +64,11 @@ export default {
         this.modelValue.questionPenalty ??= 0;
         this.modelValue.exclude = true;
     },
+    computed:{
+        mv(){
+            return this.modelValue;
+        }
+    },
     methods:{
         addQuestion(){
             this.modelValue.questions.push({
diff --git a/src/components/InteractiveObjects/SceneSwitcher.js b/src/components/InteractiveObjects/SceneSwitcher.js
new file mode 100644
index 0000000..b1bac93
--- /dev/null
+++ b/src/components/InteractiveObjects/SceneSwitcher.js
@@ -0,0 +1,38 @@
+import { getBoundingBox, getBoundingBoxCenterPoint, getBoundingBoxMaxLength, centerOrigin } from "@/lib/MeshUtils";
+import { SphereGeometry, Mesh, MeshStandardMaterial, BackSide, Group } from "three";
+import { EventManager } from '@/lib/EventManager';
+
+class SceneSwitcher extends EventManager{
+    emits = ['sceneSwitch']
+    constructor(engine, data){
+        super();
+        return new Promise(async(resolve, reject)=>{
+            this.source = this;
+            this.object = new Group()
+            if (data.switchType == 'award'){
+                let gltf = await engine.load('trophy.glb', '/static/meshes/scene-switcher/');
+                this.object.add(gltf.scene);
+                engine.motionQueue.add({ 
+                    o: gltf.scene,
+                    a:{rotation: { y: k=>k*Math.PI*2 }}, r: true, t: 4 
+                })
+            }else if(data.switchType == 'sphere'){
+                let geo = new SphereGeometry(1);
+                let material = new MeshStandardMaterial({
+                    map: await engine.loadTexture(data.$go_env.asset.name)
+                })
+                let sphere = new Mesh(geo, material);
+                sphere.position.y = 0.5;
+                this.object.add(sphere);
+            }else{
+                //sensor, TODO!!!, to be implemented
+            }
+            engine.clickable.add(this.object, async e=>{
+                this.dispatchEvent({type:'sceneSwitch', scene: data.switchScene});
+            })
+            resolve(this);
+        })
+    }
+}
+
+export { SceneSwitcher }
\ No newline at end of file
diff --git a/src/components/InteractiveObjects/SceneSwitcher.vue b/src/components/InteractiveObjects/SceneSwitcher.vue
new file mode 100644
index 0000000..147cec2
--- /dev/null
+++ b/src/components/InteractiveObjects/SceneSwitcher.vue
@@ -0,0 +1,53 @@
+<template>
+    <div>
+        <v-select label="Switch to scene" v-model="modelValue.switchScene" density="compact" 
+            :items="scenes"></v-select>
+        <v-select label="Switch type" v-model="modelValue.switchType" density="compact"
+            :items="switchTypes"></v-select>
+        <!-- <div class="text-caption text-center">{{ modelValue.title }}</div> -->
+    </div>
+</template>
+
+<script>
+
+import { computed } from 'vue';
+import OffsetLine from '../SceneDesigner/OffsetLine.vue';
+
+export default {
+    components:{ OffsetLine },
+    data(){
+        return {
+            active: false,
+            switchTypes: [
+                { title: 'Award', value: 'award' },
+                { title: 'Sphere', value: 'sphere' },
+                { title: 'Sensor', value: 'sensor' }
+            ]
+        }
+    },
+    mounted(){
+        this.active = true;
+    },
+
+    props:{
+        modelValue: Object
+    },
+    computed:{
+        scenes(){
+            return this.modelValue.__root.scenes.map(s=>({title: s.data.title, value: s.data.id}))
+        },
+    },
+    methods:{
+
+    },
+
+    __transform(data){
+        data.go_env = computed(()=>{
+            if (data.switchType == 'sphere' && data.switchScene){
+                return data.__root.scenes.find(s=>s.data.id == data.switchScene).data.environment;
+            }
+        })
+    }
+}
+
+</script>
\ No newline at end of file
diff --git a/src/components/SceneDesigner/GameObject.vue b/src/components/SceneDesigner/GameObject.vue
index 965ff05..d06e32a 100644
--- a/src/components/SceneDesigner/GameObject.vue
+++ b/src/components/SceneDesigner/GameObject.vue
@@ -16,12 +16,14 @@
             </image>
         </g>
     </teleport>
+    <teleport to=".scene-designer .lines" v-if="active && targetScene">
+        <OffsetLine :x1="targetScene.vd.x1" :y1="targetScene.vd.y1" 
+            :x2="modelValue.__this.vd.x1" :y2="modelValue.__this.vd.y1" :o1="88" :o2="55"
+            class="scene-switcher" marker-start="url(#arrow)" ></OffsetLine>
+    </teleport>
     <v-card v-if="selected" :title="modelValue.title" class="mx-2" variant="text">
-        <asset-selector @select="assignGameObject" :type="['GameObject']">
-            <template v-slot:activator="props">
-                <v-btn v-bind="props" prepend-icon="mdi-panorama-outline" color="success" block>Choose game object</v-btn>
-            </template>
-        </asset-selector>
+        <v-select label="Game Object Type" v-model="modelValue.type" density="compact" hide-details
+            :items="InteractiveObjectTypes.map(e=>({title: e.name, value: e.id}))"></v-select>
         <v-form class="pt-4">
             <v-text-field density="compact" :label="l.name" v-model="modelValue.title"></v-text-field>
             <!-- <v-text-field density="compact" :label="l.id" v-model="modelValue.id"></v-text-field> -->
@@ -35,10 +37,10 @@
             <v-number-input density="compact" label="Level score should be above" v-model="modelValue.activationScore"></v-number-input>
             <v-select density="compact" label="Following elements should be completed"  v-model="modelValue.activationTriggers"
                 :items="parent.data.items.filter(v=>!v.data.exclude && v.data!==modelValue).map(v=>({title: v.data.title, value: v.data.id}))" multiple ></v-select>
+            <v-select label="Activation Type" :items="activationTypes" density="compact" v-model="modelValue.activationType"></v-select>
         </v-card>
     </v-card>
     
-    
 </template>
 
 <script>
@@ -52,24 +54,18 @@ import ClassicPuzzle from '../InteractiveObjects/ClassicPuzzle.vue';
 import Particles from '../InteractiveObjects/Particles.vue';
 import GenericObject from '../InteractiveObjects/GenericObject.vue';
 import CharacterObject from '../InteractiveObjects/CharacterObject.vue';
+import SceneSwitcher from '../InteractiveObjects/SceneSwitcher.vue';
 import OffsetLine from './OffsetLine.vue';
 
+import { InteractiveObjectTypes } from '../InteractiveObjects/InteractiveObject';
+
+const components = { 
+    SvgIcon, OffsetLine, GenericObject, CharacterObject, VideoPlayer, SceneSwitcher,
+    PuzzleGame1, PuzzleGame2, MazeQuizGame, Particles, ClassicPuzzle
+};
+
 export default {
     emits:['target', 'preview'],
-    components: { 
-        SvgIcon, OffsetLine, GenericObject, CharacterObject, VideoPlayer, 
-        PuzzleGame1, PuzzleGame2, MazeQuizGame, Particles, ClassicPuzzle
-    },
-    data(){
-        return {
-            active: false
-        }
-    },
-    mounted(){
-        this.active = true;
-        this.modelValue.points ??= 10;
-        this.modelValue.activationScore ??= 0;
-    },
     props:{
         //context: Object,
         modelValue: Object,
@@ -79,6 +75,23 @@ export default {
         visible: Boolean,
         parent: Object
     },
+    components,
+    data(){
+        return {
+            InteractiveObjectTypes,
+            active: false,
+            activationTypes: [{ title:'Unlock', value:'unlock'}, { title:'Appear', value:'appear'}]
+        }
+    },
+    mounted(){
+        this.active = true;
+        this.modelValue.points ??= 10;
+        this.modelValue.activationScore ??= 0;
+        this.modelValue.type ??= 'GenericObject';
+        if (components[this.modelValue.type].__transform){
+            components[this.modelValue.type].__transform(this.modelValue)
+        }
+    },
     computed:{
         showInView(){
             this.vd.__showInView = this.visible && this.parent.visible;
@@ -86,7 +99,10 @@ export default {
         },
         mv(){
             return this.modelValue
-        }
+        },
+        targetScene(){
+            return this.modelValue.__root.scenes.find(s=>s.data.id == this.modelValue?.switchScene)
+        },
     },
     steps: [['x1', 'y1']],
     name: 'game-object',
@@ -94,17 +110,6 @@ export default {
     methods:{
         intersect(v){
             return Utils.intersectPointRect([this.vd.x1, this.vd.y1], v);
-        },
-        assignGameObject(e){
-            this.modelValue.go = e.id;
-            if (this.modelValue.id == this.modelValue.title){
-                this.modelValue.title = e.name
-            }
-            if (e.type == 'InteractiveObject'){
-                this.modelValue.type = e.id;
-            }else{
-                this.modelValue.type = 'GenericObject'
-            }
         }
     }
 }
diff --git a/src/mixins/GameEnvironmentMixin.js b/src/mixins/GameEnvironmentMixin.js
index 7eaf4fd..b649a7f 100644
--- a/src/mixins/GameEnvironmentMixin.js
+++ b/src/mixins/GameEnvironmentMixin.js
@@ -106,7 +106,9 @@ export default {
             })
             
             for (let i of scene.data.items || []) {
-                promises.push(this.$api.gameObject.load(i.data.go).then(r=>i.data.$go = r.data));
+                Object.keys(i.data).filter(k=>k == 'go' || k.startsWith('go_')).forEach(k=>{
+                    promises.push(this.$api.gameObject.load(i.data[k]).then(r=>i.data['$'+k] = r.data));
+                })
             }
             await Promise.all(promises);
         },
@@ -193,15 +195,19 @@ export default {
                                     let idx = di.data.activationTriggers.indexOf(i.data.id)
                                     di.data.activationTriggers.splice(idx, 1);
                                 }
-                                if (!di.data.activationTriggers?.length && di.__io.object.__locked &&
+                                if (!di.data.activationTriggers?.length && di.__io.object.__active === false &&
                                     gameEngine.dashboard.points > di.data.activationScore){
-                                        di.__io.locker.unlock();
+                                        di.__io.activator.activate();
                                     }
                             });
                             if (finished == expectToFinish){
                                 //GO TO NEXT LEVEL
                                 console.log('LEVEL FINISHED')
                             }
+                        });
+                        io.addEventListener('sceneSwitch', (e)=>{
+                            console.log(e);
+                            this.scenesList = [this.scenes.find(s=>s.data.id == e.scene)]
                         })
                     }
                     loaded += 1/this.scene.data.items.length