diff --git a/Scenes/Main.tscn b/Scenes/Main.tscn
index 000a2e7..36d7a66 100644
--- a/Scenes/Main.tscn
+++ b/Scenes/Main.tscn
@@ -2,7 +2,7 @@
 
 [ext_resource type="Script" path="res://Scripts/Main.gd" id="1_2yjjx"]
 [ext_resource type="PackedScene" uid="uid://deff7lt34nj0h" path="res://Spaces/Dungeon.tscn" id="2_4gs22"]
-[ext_resource type="PackedScene" uid="uid://d3e3a6xdwo2dp" path="res://Scenes/Player.tscn" id="3_eq7hn"]
+[ext_resource type="PackedScene" uid="uid://b83k3b5x1wmyl" path="res://Scenes/Player.tscn" id="3_eq7hn"]
 
 [sub_resource type="Environment" id="Environment_pn2uj"]
 
diff --git a/Scenes/Player.tscn b/Scenes/Player.tscn
index fded525..28be13a 100644
--- a/Scenes/Player.tscn
+++ b/Scenes/Player.tscn
@@ -1,7 +1,11 @@
-[gd_scene load_steps=2 format=3 uid="uid://d3e3a6xdwo2dp"]
+[gd_scene load_steps=3 format=3 uid="uid://b83k3b5x1wmyl"]
 
 [ext_resource type="Script" path="res://Scripts/Player.gd" id="1_m1g7d"]
 
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_pfjla"]
+radius = 0.4
+height = 1.4
+
 [node name="Player" type="CharacterBody3D" node_paths=PackedStringArray("camera")]
 script = ExtResource("1_m1g7d")
 camera = NodePath("Pivot/Camera3D")
@@ -9,3 +13,6 @@ camera = NodePath("Pivot/Camera3D")
 [node name="Pivot" type="Node3D" parent="."]
 
 [node name="Camera3D" type="Camera3D" parent="Pivot"]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+shape = SubResource("CapsuleShape3D_pfjla")
diff --git a/Scripts/Main.gd b/Scripts/Main.gd
index 1495afa..a8ec75f 100644
--- a/Scripts/Main.gd
+++ b/Scripts/Main.gd
@@ -3,7 +3,7 @@ extends Node3D
 
 func _ready():
 	add_child($Dungeon.generate_geometry())
-	var spawn = $Dungeon.get_spawn()
+	var spawn: SpaceSpawn.Desc = $Dungeon.get_spawn()
 	$Player.position = spawn.position
 	$Player.position.y += 0.5
 	$Player.rotation = spawn.rotation
diff --git a/Scripts/Player.gd b/Scripts/Player.gd
index baa35fe..db80434 100644
--- a/Scripts/Player.gd
+++ b/Scripts/Player.gd
@@ -6,7 +6,8 @@ extends CharacterBody3D
 const VIEW_BOB_FREQUENCY = 8
 const VIEW_BOB_AMPLITUDE = 0.03
 
-var speed := 2
+var gravity := 20.0
+var speed := 2.0
 var turn_speed_sec := 0.1
 var turn_degrees := 90
 var view_bob_time := 0.0 # increased while velocity is not zero
@@ -55,8 +56,7 @@ func _process(delta: float) -> void:
 
 
 func _physics_process(delta: float) -> void:
-	# TODO
-	#velocity.y += gravity * delta
+	velocity.y -= gravity * delta
 	var final_velocity = _get_input() * speed
 
 	velocity.x = final_velocity.x
diff --git a/Scripts/Space/Space.gd b/Scripts/Space/Space.gd
index 61dbd99..b6811fe 100644
--- a/Scripts/Space/Space.gd
+++ b/Scripts/Space/Space.gd
@@ -15,7 +15,7 @@ func generate_geometry() -> Node3D:
 
 	for child in get_children():
 		if child is SpaceRegion:
-			var geometry = child.generate_geometry(self)
+			var geometry: MeshInstance3D = child.generate_geometry(self)
 			root.add_child(geometry)
 
 	return root
diff --git a/Scripts/Space/SpaceRegion.gd b/Scripts/Space/SpaceRegion.gd
index 15d519f..caf573d 100644
--- a/Scripts/Space/SpaceRegion.gd
+++ b/Scripts/Space/SpaceRegion.gd
@@ -56,6 +56,7 @@ func _generate_geometry(space: Space, looked_from_inside: bool) -> Node3D:
 		if child is SpaceRegion:
 			geometry.add_child(child._generate_geometry(space, not looked_from_inside))
 
+	geometry.create_trimesh_collision()
 	return geometry