diff --git a/project.godot b/project.godot
index 58d4b9f..2c39951 100644
--- a/project.godot
+++ b/project.godot
@@ -299,6 +299,10 @@ translations=PoolStringArray( "res://locale/fr.po", "res://locale/en.po" )
 name_num_separator=2
 name_casing=2
 
+[physics]
+
+3d/physics_engine="GodotPhysics"
+
 [rendering]
 
 threads/thread_model=2
diff --git a/scenes/game/alpha.tscn b/scenes/game/alpha.tscn
index 3149001..9f52b68 100644
--- a/scenes/game/alpha.tscn
+++ b/scenes/game/alpha.tscn
@@ -1,40 +1,12 @@
-[gd_scene load_steps=8 format=2]
+[gd_scene load_steps=3 format=2]
 
-[ext_resource path="res://scenes/game/area_1_0.tscn" type="PackedScene" id=1]
-[ext_resource path="res://scenes/game/area_0_0.tscn" type="PackedScene" id=2]
-[ext_resource path="res://scenes/game/area_1_1.tscn" type="PackedScene" id=3]
-[ext_resource path="res://scenes/game/area_0_1.tscn" type="PackedScene" id=4]
-[ext_resource path="res://scenes/game/area_1_2.tscn" type="PackedScene" id=6]
-[ext_resource path="res://scenes/game/area_2_2.tscn" type="PackedScene" id=7]
+[ext_resource path="res://scenes/game/alpha.gd" type="Script" id=5]
 [ext_resource path="res://scenes/player/playerB.tscn" type="PackedScene" id=8]
 
 [node name="spatial" type="Spatial"]
+script = ExtResource( 5 )
 
 [node name="player" parent="." instance=ExtResource( 8 )]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.01, 0 )
 
-[node name="area_0_0" parent="." instance=ExtResource( 2 )]
-
-[node name="area_0_1" parent="." instance=ExtResource( 4 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 10, 0, 0 )
-
-[node name="area_1_0" parent="." instance=ExtResource( 1 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 10 )
-
-[node name="area_1_1" parent="." instance=ExtResource( 3 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 10, 0, 10 )
-
-[node name="area_1_2" parent="." instance=ExtResource( 6 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -9.9736, 0.0109801, -0.0108967 )
-
-[node name="area_2_2" parent="." instance=ExtResource( 7 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -10, 0, 10 )
-
-[node name="area_3_0" parent="." instance=ExtResource( 1 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 10, 0, -10 )
-
-[node name="area_3_1" parent="." instance=ExtResource( 3 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, -10 )
-
-[node name="area_3_2" parent="." instance=ExtResource( 2 )]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -10, 0, -10 )
+[node name="map" type="Spatial" parent="."]
diff --git a/scenes/game/area_0_0.tscn b/scenes/game/area_0_0.tscn
index 3af5cff..579d69d 100644
--- a/scenes/game/area_0_0.tscn
+++ b/scenes/game/area_0_0.tscn
@@ -1,10 +1,10 @@
 [gd_scene load_steps=4 format=2]
 
-[sub_resource type="SpatialMaterial" id=2]
+[sub_resource type="SpatialMaterial" id=1]
 albedo_color = Color( 0.717647, 0.0784314, 0.0784314, 1 )
 
-[sub_resource type="PlaneMesh" id=1]
-material = SubResource( 2 )
+[sub_resource type="PlaneMesh" id=2]
+material = SubResource( 1 )
 
 [sub_resource type="ConcavePolygonShape" id=3]
 data = PoolVector3Array( 1, 0, 1, -1, 0, 1, 1, 0, -1, -1, 0, 1, -1, 0, -1, 1, 0, -1 )
@@ -13,7 +13,7 @@ data = PoolVector3Array( 1, 0, 1, -1, 0, 1, 1, 0, -1, -1, 0, 1, -1, 0, -1, 1, 0,
 
 [node name="mesh_instance" type="MeshInstance" parent="."]
 transform = Transform( 5, 0, 0, 0, 1, 0, 0, 0, 5, 0, 0, 0 )
-mesh = SubResource( 1 )
+mesh = SubResource( 2 )
 material/0 = null
 
 [node name="static_body" type="StaticBody" parent="mesh_instance"]