diff --git a/asset_credits.org b/asset_credits.org
index fe7aeb5..6a3ee94 100644
--- a/asset_credits.org
+++ b/asset_credits.org
@@ -86,3 +86,19 @@ Asset credits
 *** Author: lmbubec
 
 *** License: CC0
+
+** grass1.wav - grass5.wav
+
+*** Retrieved from https://freesound.org/people/mmmtoop/sounds/674030/
+
+*** Author: mmmtoop
+
+*** License: CC0
+
+** sand1.wav - sand3.wav
+
+*** Retrieved from https://freesound.org/people/Elements-Library/sounds/683785/
+
+*** Author: Elements-Library
+
+*** License: CC0
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+edit/loop_end=-1
+compress/mode=0
diff --git a/assets/sound/sfx/ball/sand2.wav b/assets/sound/sfx/ball/sand2.wav
new file mode 100644
index 0000000..f112b89
--- /dev/null
+++ b/assets/sound/sfx/ball/sand2.wav
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9086cf13e0985b6cc3687795d04af62f9c81400c4b19cb16ace4992f7ace19b8
+size 134828
diff --git a/assets/sound/sfx/ball/sand2.wav.import b/assets/sound/sfx/ball/sand2.wav.import
new file mode 100644
index 0000000..84e86d5
--- /dev/null
+++ b/assets/sound/sfx/ball/sand2.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://b5xx5t050i4p"
+path="res://.godot/imported/sand2.wav-8556fd9b18e6810c91fc69b1f24a839b.sample"
+
+[deps]
+
+source_file="res://assets/sound/sfx/ball/sand2.wav"
+dest_files=["res://.godot/imported/sand2.wav-8556fd9b18e6810c91fc69b1f24a839b.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=0
diff --git a/assets/sound/sfx/ball/sand3.wav b/assets/sound/sfx/ball/sand3.wav
new file mode 100644
index 0000000..456d3da
--- /dev/null
+++ b/assets/sound/sfx/ball/sand3.wav
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b123f7eb6278502ad61d0412739a154c847190a638b9d81a7f7b984a797c7820
+size 128420
diff --git a/assets/sound/sfx/ball/sand3.wav.import b/assets/sound/sfx/ball/sand3.wav.import
new file mode 100644
index 0000000..c041848
--- /dev/null
+++ b/assets/sound/sfx/ball/sand3.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://c35jy105xr640"
+path="res://.godot/imported/sand3.wav-708a3206418fb40e4b4f401186c037b1.sample"
+
+[deps]
+
+source_file="res://assets/sound/sfx/ball/sand3.wav"
+dest_files=["res://.godot/imported/sand3.wav-708a3206418fb40e4b4f401186c037b1.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=0
diff --git a/levels/debug_level/debug_level.tscn b/levels/debug_level/debug_level.tscn
index edf1bf9..e6cd11e 100644
--- a/levels/debug_level/debug_level.tscn
+++ b/levels/debug_level/debug_level.tscn
@@ -1,17 +1,10 @@
-[gd_scene load_steps=51 format=3 uid="uid://bm2o3mex10v11"]
+[gd_scene load_steps=37 format=3 uid="uid://bm2o3mex10v11"]
 
-[ext_resource type="Texture2D" path="res://assets/textures/grass_fairway/grass_fairway_albedo.dds" id="2_e4m27"]
-[ext_resource type="Texture2D" path="res://assets/textures/grass_rough/grass_rough_albedo.dds" id="4_p0awb"]
-[ext_resource type="Texture2D" path="res://assets/textures/grass_rough/grass_rough_normal.dds" id="4_yhjhv"]
-[ext_resource type="Texture2D" path="res://assets/textures/grass_fairway/grass_fairway_normal.dds" id="5_o361t"]
+[ext_resource type="Terrain3DAssets" uid="uid://cwl34gstabgrx" path="res://levels/debug_level/terrain_assets.res" id="1_5smdk"]
 [ext_resource type="Shader" path="res://src/shaders/psx_water.gdshader" id="6_0efu4"]
 [ext_resource type="Texture2D" uid="uid://c47ern0l2d50r" path="res://assets/vista_2.png" id="6_ectru"]
-[ext_resource type="Texture2D" path="res://assets/textures/sand_trap/sand_trap_albedo.dds" id="6_nlea7"]
-[ext_resource type="Texture2D" path="res://assets/textures/sand_trap/sand_trap_normal.dds" id="7_f25dn"]
 [ext_resource type="Texture2D" uid="uid://con5a36t6n6sq" path="res://assets/textures/clear_sea_water_2048x2048.png" id="7_t86h2"]
-[ext_resource type="Texture2D" path="res://assets/textures/mountain_rock/mountain_rock_albedo.dds" id="8_ujbjy"]
 [ext_resource type="Script" path="res://src/world/ball_zone/ball_zone.gd" id="9_jwlau"]
-[ext_resource type="Texture2D" path="res://assets/textures/mountain_rock/mountain_rock_normal.dds" id="9_rrguh"]
 [ext_resource type="PackedScene" uid="uid://dagh38vap4t1d" path="res://src/props/scenery/city/concrete_building_1.tscn" id="10_lf15j"]
 [ext_resource type="PackedScene" uid="uid://cjubxs7peir5k" path="res://src/props/scenery/city/kana_signboard.tscn" id="11_evxup"]
 [ext_resource type="PackedScene" uid="uid://di7aql54lksn7" path="res://src/props/scenery/trees/palm_tree/palm_tree.tscn" id="12_sswxf"]
@@ -61,53 +54,6 @@ world_background = 2
 texture_filtering = 1
 auto_shader = true
 
-[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_l1sla"]
-transparency = 4
-cull_mode = 2
-vertex_color_use_as_albedo = true
-backlight_enabled = true
-backlight = Color(0.5, 0.5, 0.5, 1)
-distance_fade_mode = 1
-distance_fade_min_distance = 960.0
-distance_fade_max_distance = 480.0
-
-[sub_resource type="Terrain3DMeshAsset" id="Terrain3DMeshAsset_iaq2t"]
-height_offset = 0.5
-density = 10.0
-material_override = SubResource("StandardMaterial3D_l1sla")
-generated_type = 1
-
-[sub_resource type="Terrain3DTextureAsset" id="Terrain3DTextureAsset_kocfk"]
-name = "Rough Grass"
-albedo_texture = ExtResource("4_p0awb")
-normal_texture = ExtResource("4_yhjhv")
-uv_scale = 0.01
-
-[sub_resource type="Terrain3DTextureAsset" id="Terrain3DTextureAsset_vmhlw"]
-name = "Fairway Grass"
-id = 1
-albedo_texture = ExtResource("2_e4m27")
-normal_texture = ExtResource("5_o361t")
-uv_scale = 0.01
-
-[sub_resource type="Terrain3DTextureAsset" id="Terrain3DTextureAsset_k6h8c"]
-name = "sand_trap_albedo"
-id = 2
-albedo_texture = ExtResource("6_nlea7")
-normal_texture = ExtResource("7_f25dn")
-uv_scale = 0.01
-
-[sub_resource type="Terrain3DTextureAsset" id="Terrain3DTextureAsset_13d2a"]
-name = "mountain_rock_albedo"
-id = 3
-albedo_texture = ExtResource("8_ujbjy")
-normal_texture = ExtResource("9_rrguh")
-uv_scale = 0.02
-
-[sub_resource type="Terrain3DAssets" id="Terrain3DAssets_eq5uw"]
-mesh_list = Array[Terrain3DMeshAsset]([SubResource("Terrain3DMeshAsset_iaq2t")])
-texture_list = Array[Terrain3DTextureAsset]([SubResource("Terrain3DTextureAsset_kocfk"), SubResource("Terrain3DTextureAsset_vmhlw"), SubResource("Terrain3DTextureAsset_k6h8c"), SubResource("Terrain3DTextureAsset_13d2a")])
-
 [sub_resource type="PanoramaSkyMaterial" id="PanoramaSkyMaterial_h8tes"]
 panorama = ExtResource("6_ectru")
 
@@ -243,7 +189,7 @@ point_count = 5
 [node name="Terrain3D" type="Terrain3D" parent="."]
 data_directory = "res://levels/debug_level/terrain_3d_data"
 material = SubResource("Terrain3DMaterial_woy2k")
-assets = SubResource("Terrain3DAssets_eq5uw")
+assets = ExtResource("1_5smdk")
 mesh_size = 64
 top_level = true
 metadata/_edit_lock_ = true
@@ -260,6 +206,8 @@ shadow_blur = 4.0
 [node name="Course" type="Node3D" parent="."]
 
 [node name="Fairway" type="Area3D" parent="Course"]
+gravity_point_center = Vector3(0, 1, 0)
+gravity_direction = Vector3(0, 1, 0)
 script = ExtResource("9_jwlau")
 terrain_angular_damping = 2.0
 
diff --git a/levels/debug_level/terrain_assets.res b/levels/debug_level/terrain_assets.res
new file mode 100644
index 0000000..923f8f6
--- /dev/null
+++ b/levels/debug_level/terrain_assets.res
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6cac6bd6fb7f3c8a67944fb14f15cb05dc12c164460b8c2d8340a1c95f5c942b
+size 1657
diff --git a/project.godot b/project.godot
index 2e9c7e3..ac685ba 100644
--- a/project.godot
+++ b/project.godot
@@ -197,6 +197,7 @@ ball_previous={
 
 3d_physics/layer_1="Collision Geometry"
 3d_physics/layer_2="Layer 3"
+3d_physics/layer_32="Grass Audio"
 
 [physics]
 
diff --git a/src/equipment/balls/physics_ball/ball_sfx.gd b/src/equipment/balls/physics_ball/ball_sfx.gd
new file mode 100644
index 0000000..9f08411
--- /dev/null
+++ b/src/equipment/balls/physics_ball/ball_sfx.gd
@@ -0,0 +1,53 @@
+class_name BallSFX extends Node3D
+## Controller for ball sound effects.
+
+const BASE_VOLUME := -36.0
+const MAX_VOLUME := 3.0
+const VELOCITY_ATTENUATION_SCALE := 400.0
+
+const GRASS_PHYSICAL_LAYER := 1 << 32
+const SAND_PHYSICAL_LAYER := 1 << 31
+
+@onready var parent: GameBall = $".."
+
+@onready var grass_sfx_player: AudioStreamPlayer3D = %GrassSFXPlayer
+@onready var concrete_sfx_player: AudioStreamPlayer3D = %ConcreteSFXPlayer
+@onready var sand_sfx_player: AudioStreamPlayer3D = %SandSFXPlayer
+
+
+func _force_attenuated_volume() -> float:
+	# Attenuate volume based on impact force
+	return lerpf(
+		BASE_VOLUME,
+		MAX_VOLUME,
+		clampf(parent.linear_velocity.length_squared() / VELOCITY_ATTENUATION_SCALE, 0, 1)
+	)
+
+
+func _play_sfx(player: AudioStreamPlayer3D) -> void:
+	player.volume_db = _force_attenuated_volume()
+	print("PLAYING: ", player, "... VOLUME: ", player.volume_db)
+	player.play()
+
+
+func play_terrain_sfx(tex_id: int) -> void:
+	var player := grass_sfx_player
+	match tex_id:
+		2:  # sand
+			player = sand_sfx_player
+		3:  # rock
+			player = concrete_sfx_player
+
+	_play_sfx(player)
+
+
+## Select the appropriate SFX to play based on the collision layer of the collider.
+##
+## We use the upper bits of the collision layer to indicate standard SFX.
+func play_physical_sfx(collision_mask: int) -> void:
+	var player := concrete_sfx_player
+	if collision_mask & GRASS_PHYSICAL_LAYER:
+		player = grass_sfx_player
+	elif collision_mask & SAND_PHYSICAL_LAYER:
+		player = sand_sfx_player
+	_play_sfx(player)
diff --git a/src/equipment/balls/physics_ball/game_ball.gd b/src/equipment/balls/physics_ball/game_ball.gd
index 5fc9bb4..3db9f12 100644
--- a/src/equipment/balls/physics_ball/game_ball.gd
+++ b/src/equipment/balls/physics_ball/game_ball.gd
@@ -52,6 +52,8 @@ var _position_on_last_wake: Vector3
 var _awake := false
 var _zones: Array[BallZone] = []
 
+@onready var sfx: BallSFX = %SFX
+
 @onready var normal_physics: PhysicsMaterial = preload(
 	"res://src/equipment/balls/physics_ball/normal_physics.tres"
 )
@@ -142,3 +144,21 @@ func _on_sleeping_state_changed() -> void:
 	if sleeping:
 		# Trigger to reassign on wake
 		_awake = false
+
+
+func _on_collision(body: Node) -> void:
+	if body is Terrain3D:
+		var texture_blend: Vector3 = (body as Terrain3D).data.get_texture_id(global_position)
+		print("T3D texture blend: ", texture_blend)
+		# TODO maybe blend audio?
+
+		# Figure out audio for autoshader
+		var tex_id: float = 0 if texture_blend.x == 3 and texture_blend.z == 0 else texture_blend.x
+
+		sfx.play_terrain_sfx(tex_id)
+	elif body is CSGShape3D:
+		sfx.play_physical_sfx((body as CSGShape3D).collision_layer)
+	elif body is CollisionObject3D:
+		sfx.play_physical_sfx((body as CollisionObject3D).collision_layer)
+	else:
+		print_debug("COLLIDER: ", body)
diff --git a/src/equipment/balls/physics_ball/physics_ball.tscn b/src/equipment/balls/physics_ball/physics_ball.tscn
index 69b0c25..f3524e3 100644
--- a/src/equipment/balls/physics_ball/physics_ball.tscn
+++ b/src/equipment/balls/physics_ball/physics_ball.tscn
@@ -1,9 +1,16 @@
-[gd_scene load_steps=9 format=3 uid="uid://dfttci386ohip"]
+[gd_scene load_steps=19 format=3 uid="uid://dfttci386ohip"]
 
 [ext_resource type="Script" path="res://src/equipment/balls/physics_ball/game_ball.gd" id="1_iwh2u"]
 [ext_resource type="PhysicsMaterial" uid="uid://3bih72l068ic" path="res://src/equipment/balls/physics_ball/normal_physics.tres" id="1_l23pw"]
 [ext_resource type="Texture2D" uid="uid://ckhiq6rfjv63u" path="res://assets/textures/gfolfball/gfolfball.png" id="1_y3q5j"]
 [ext_resource type="Texture2D" uid="uid://btntjs7mbdigu" path="res://assets/textures/gfolfball/gfolfball_normal.png" id="2_mx7l6"]
+[ext_resource type="Script" path="res://src/equipment/balls/physics_ball/ball_sfx.gd" id="5_bhshl"]
+[ext_resource type="AudioStream" uid="uid://cayyndwmxua5x" path="res://assets/sound/sfx/ball/grass2.wav" id="7_l22cv"]
+[ext_resource type="AudioStream" uid="uid://orisjdcj3mes" path="res://assets/sound/sfx/ball/concrete3.wav" id="7_t2ak2"]
+[ext_resource type="AudioStream" uid="uid://o4whyv43rr1u" path="res://assets/sound/sfx/ball/concrete4.wav" id="8_0anjl"]
+[ext_resource type="AudioStream" uid="uid://3csnnhxndt67" path="res://assets/sound/sfx/ball/concrete5.wav" id="9_p0lmw"]
+[ext_resource type="AudioStream" uid="uid://bbbp6wrkuhkek" path="res://assets/sound/sfx/ball/sand1.wav" id="10_b64mx"]
+[ext_resource type="AudioStream" uid="uid://b5xx5t050i4p" path="res://assets/sound/sfx/ball/sand2.wav" id="11_ed8je"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_xqofq"]
 albedo_texture = ExtResource("1_y3q5j")
@@ -66,6 +73,25 @@ func _draw() -> void:
 		draw_line(start, end, COLOR_MAGNUS, WIDTH)
 "
 
+[sub_resource type="AudioStreamRandomizer" id="AudioStreamRandomizer_gc38m"]
+playback_mode = 1
+random_pitch = 1.1
+streams_count = 1
+stream_0/stream = ExtResource("7_l22cv")
+
+[sub_resource type="AudioStreamRandomizer" id="AudioStreamRandomizer_tg0n0"]
+random_pitch = 1.1
+streams_count = 3
+stream_0/stream = ExtResource("7_t2ak2")
+stream_1/stream = ExtResource("8_0anjl")
+stream_2/stream = ExtResource("9_p0lmw")
+
+[sub_resource type="AudioStreamRandomizer" id="AudioStreamRandomizer_uu1f8"]
+playback_mode = 1
+streams_count = 2
+stream_0/stream = ExtResource("10_b64mx")
+stream_1/stream = ExtResource("11_ed8je")
+
 [node name="PhysicsBall" type="RigidBody3D"]
 mass = 0.05
 physics_material_override = ExtResource("1_l23pw")
@@ -97,4 +123,28 @@ grow_vertical = 2
 script = SubResource("GDScript_p4v7o")
 draw_reoriented_basis = false
 
+[node name="SFX" type="Node3D" parent="."]
+unique_name_in_owner = true
+script = ExtResource("5_bhshl")
+
+[node name="GrassSFXPlayer" type="AudioStreamPlayer3D" parent="SFX"]
+unique_name_in_owner = true
+stream = SubResource("AudioStreamRandomizer_gc38m")
+unit_size = 40.0
+bus = &"SFX"
+
+[node name="ConcreteSFXPlayer" type="AudioStreamPlayer3D" parent="SFX"]
+unique_name_in_owner = true
+stream = SubResource("AudioStreamRandomizer_tg0n0")
+unit_size = 40.0
+bus = &"SFX"
+
+[node name="SandSFXPlayer" type="AudioStreamPlayer3D" parent="SFX"]
+unique_name_in_owner = true
+stream = SubResource("AudioStreamRandomizer_uu1f8")
+unit_size = 40.0
+max_db = 0.0
+bus = &"SFX"
+
+[connection signal="body_entered" from="." to="." method="_on_collision"]
 [connection signal="sleeping_state_changed" from="." to="." method="_on_sleeping_state_changed"]
diff --git a/src/player/shot_setup/shot_setup.gd b/src/player/shot_setup/shot_setup.gd
index a335203..df5e435 100644
--- a/src/player/shot_setup/shot_setup.gd
+++ b/src/player/shot_setup/shot_setup.gd
@@ -247,13 +247,14 @@ func take_shot() -> void:
 	# Impact screenshake & hitlag
 	if game:
 		if shot_power > BIG_POWER_THRESHOLD:
-			game.viewport.hit_lag_big()
+			#game.viewport.hit_lag_big()
 			var shake_intensity: float = (
 				10.0 * (shot_power - BIG_POWER_THRESHOLD) / (1.0 - BIG_POWER_THRESHOLD)
 			)
 			game.viewport.screen_shake(shake_intensity, 1.0)
 		else:
-			game.viewport.hit_lag_small()
+			pass
+			#game.viewport.hit_lag_small()
 
 	print_debug("WHACK!\nPower: ", shot_power, "\nCurve: ", shot_curve)
 
diff --git a/src/props/scenery/trees/palm_tree/palm_tree.tscn b/src/props/scenery/trees/palm_tree/palm_tree.tscn
index a47a604..63bb384 100644
--- a/src/props/scenery/trees/palm_tree/palm_tree.tscn
+++ b/src/props/scenery/trees/palm_tree/palm_tree.tscn
@@ -45,6 +45,7 @@ bones/10/scale = Vector3(1, 1, 1)
 bones/11/rotation = Quaternion(-0.13894, 0.0183908, 0.000355869, 0.99013)
 
 [node name="StaticBody3D" type="StaticBody3D" parent="." index="2"]
+collision_layer = 2147483649
 
 [node name="CollisionShape3D2" type="CollisionShape3D" parent="StaticBody3D" index="0"]
 shape = SubResource("ConcavePolygonShape3D_bp5t6")