diff --git a/community/options.py b/community/options.py
index cdd5dbe..d1b4d8c 100644
--- a/community/options.py
+++ b/community/options.py
@@ -31,9 +31,7 @@
 # Recommended values are between 0 and 9
 
 # Legacy Smooth FPS
-SMOOTH_FPS = (
-	False  # Legacy way to force the flushing of command buffer and forces the CPU to wait for the GPU to finish rendering.
-)
+SMOOTH_FPS = False  # Legacy way to force the flushing of command buffer and forces the CPU to wait for the GPU to finish rendering.
 # Incompatible Max CPU Ahead Frames (it won't be effective)
 # Enable this to test whether its impact is better. Similar to Max CPU Ahead frames to 0
 
diff --git a/community/save.py b/community/save.py
index b9e58ab..2027e94 100644
--- a/community/save.py
+++ b/community/save.py
@@ -68,11 +68,9 @@ def save_chunk(self, chunk_position):
 		for x in range(chunk.CHUNK_WIDTH):
 			for y in range(chunk.CHUNK_HEIGHT):
 				for z in range(chunk.CHUNK_LENGTH):
-					chunk_blocks[
-						x * chunk.CHUNK_LENGTH * chunk.CHUNK_HEIGHT + z * chunk.CHUNK_HEIGHT + y
-					] = self.world.chunks[
-						chunk_position
-					].blocks[x][y][z]
+					chunk_blocks[x * chunk.CHUNK_LENGTH * chunk.CHUNK_HEIGHT + z * chunk.CHUNK_HEIGHT + y] = (
+						self.world.chunks[chunk_position].blocks[x][y][z]
+					)
 
 		# save the chunk file
 
diff --git a/episode-11/save.py b/episode-11/save.py
index 6125a86..7d75249 100644
--- a/episode-11/save.py
+++ b/episode-11/save.py
@@ -64,11 +64,9 @@ def save_chunk(self, chunk_position):
 		for x in range(chunk.CHUNK_WIDTH):
 			for y in range(chunk.CHUNK_HEIGHT):
 				for z in range(chunk.CHUNK_LENGTH):
-					chunk_blocks[
-						x * chunk.CHUNK_LENGTH * chunk.CHUNK_HEIGHT + z * chunk.CHUNK_HEIGHT + y
-					] = self.world.chunks[
-						chunk_position
-					].blocks[x][y][z]
+					chunk_blocks[x * chunk.CHUNK_LENGTH * chunk.CHUNK_HEIGHT + z * chunk.CHUNK_HEIGHT + y] = (
+						self.world.chunks[chunk_position].blocks[x][y][z]
+					)
 
 		# save the chunk file
 
diff --git a/episode-12/save.py b/episode-12/save.py
index 198a2a8..0d4f25e 100644
--- a/episode-12/save.py
+++ b/episode-12/save.py
@@ -64,11 +64,9 @@ def save_chunk(self, chunk_position):
 		for x in range(chunk.CHUNK_WIDTH):
 			for y in range(chunk.CHUNK_HEIGHT):
 				for z in range(chunk.CHUNK_LENGTH):
-					chunk_blocks[
-						x * chunk.CHUNK_LENGTH * chunk.CHUNK_HEIGHT + z * chunk.CHUNK_HEIGHT + y
-					] = self.world.chunks[
-						chunk_position
-					].blocks[x][y][z]
+					chunk_blocks[x * chunk.CHUNK_LENGTH * chunk.CHUNK_HEIGHT + z * chunk.CHUNK_HEIGHT + y] = (
+						self.world.chunks[chunk_position].blocks[x][y][z]
+					)
 
 		# save the chunk file
 
diff --git a/episode-13/main.py b/episode-13/main.py
index 645d084..3503386 100644
--- a/episode-13/main.py
+++ b/episode-13/main.py
@@ -208,7 +208,12 @@ class Game:
 	def __init__(self):
 		self.config = gl.Config(double_buffer=True, major_version=3, minor_version=3, depth_size=16)
 		self.window = Window(
-			config=self.config, width=800, height=600, caption="Minecraft clone", resizable=True, vsync=False
+			config=self.config,
+			width=800,
+			height=600,
+			caption="Minecraft clone",
+			resizable=True,
+			vsync=False,
 		)
 
 	def run(self):
diff --git a/episode-13/models/cactus.py b/episode-13/models/cactus.py
index b0d1835..3ea563e 100644
--- a/episode-13/models/cactus.py
+++ b/episode-13/models/cactus.py
@@ -5,12 +5,90 @@
 colliders = [[(-0.4375, -0.5, -0.4375), (0.4375, 0.5, 0.4375)]]
 
 vertex_positions = [
-	[0.4375, 0.5000, 0.5000, 0.4375, -0.5000, 0.5000, 0.4375, -0.5000, -0.5000, 0.4375, 0.5000, -0.5000],  # right
-	[-0.4375, 0.5000, -0.5000, -0.4375, -0.5000, -0.5000, -0.4375, -0.5000, 0.5000, -0.4375, 0.5000, 0.5000],  # left
-	[0.5000, 0.5000, 0.5000, 0.5000, 0.5000, -0.5000, -0.5000, 0.5000, -0.5000, -0.5000, 0.5000, 0.5000],  # top
-	[-0.5000, -0.5000, 0.5000, -0.5000, -0.5000, -0.5000, 0.5000, -0.5000, -0.5000, 0.5000, -0.5000, 0.5000],  # bottom
-	[-0.5000, 0.5000, 0.4375, -0.5000, -0.5000, 0.4375, 0.5000, -0.5000, 0.4375, 0.5000, 0.5000, 0.4375],  # front
-	[0.5000, 0.5000, -0.4375, 0.5000, -0.5000, -0.4375, -0.5000, -0.5000, -0.4375, -0.5000, 0.5000, -0.4375],  # back
+	[
+		0.4375,
+		0.5000,
+		0.5000,
+		0.4375,
+		-0.5000,
+		0.5000,
+		0.4375,
+		-0.5000,
+		-0.5000,
+		0.4375,
+		0.5000,
+		-0.5000,
+	],  # right
+	[
+		-0.4375,
+		0.5000,
+		-0.5000,
+		-0.4375,
+		-0.5000,
+		-0.5000,
+		-0.4375,
+		-0.5000,
+		0.5000,
+		-0.4375,
+		0.5000,
+		0.5000,
+	],  # left
+	[
+		0.5000,
+		0.5000,
+		0.5000,
+		0.5000,
+		0.5000,
+		-0.5000,
+		-0.5000,
+		0.5000,
+		-0.5000,
+		-0.5000,
+		0.5000,
+		0.5000,
+	],  # top
+	[
+		-0.5000,
+		-0.5000,
+		0.5000,
+		-0.5000,
+		-0.5000,
+		-0.5000,
+		0.5000,
+		-0.5000,
+		-0.5000,
+		0.5000,
+		-0.5000,
+		0.5000,
+	],  # bottom
+	[
+		-0.5000,
+		0.5000,
+		0.4375,
+		-0.5000,
+		-0.5000,
+		0.4375,
+		0.5000,
+		-0.5000,
+		0.4375,
+		0.5000,
+		0.5000,
+		0.4375,
+	],  # front
+	[
+		0.5000,
+		0.5000,
+		-0.4375,
+		0.5000,
+		-0.5000,
+		-0.4375,
+		-0.5000,
+		-0.5000,
+		-0.4375,
+		-0.5000,
+		0.5000,
+		-0.4375,
+	],  # back
 ]
 
 tex_coords = [
diff --git a/episode-13/models/crop.py b/episode-13/models/crop.py
index 65d9373..65cd735 100644
--- a/episode-13/models/crop.py
+++ b/episode-13/models/crop.py
@@ -5,14 +5,118 @@
 colliders = []
 
 vertex_positions = [
-	[0.25, 0.4375, 0.50, 0.25, -0.5625, 0.50, 0.25, -0.5625, -0.50, 0.25, 0.4375, -0.50],  # right
-	[0.25, 0.4375, -0.50, 0.25, -0.5625, -0.50, 0.25, -0.5625, 0.50, 0.25, 0.4375, 0.50],  # right
-	[-0.25, 0.4375, -0.50, -0.25, -0.5625, -0.50, -0.25, -0.5625, 0.50, -0.25, 0.4375, 0.50],  # left
-	[-0.25, 0.4375, 0.50, -0.25, -0.5625, 0.50, -0.25, -0.5625, -0.50, -0.25, 0.4375, -0.50],  # left
-	[-0.50, 0.4375, 0.25, -0.50, -0.5625, 0.25, 0.50, -0.5625, 0.25, 0.50, 0.4375, 0.25],  # front
-	[0.50, 0.4375, 0.25, 0.50, -0.5625, 0.25, -0.50, -0.5625, 0.25, -0.50, 0.4375, 0.25],  # front
-	[0.50, 0.4375, -0.25, 0.50, -0.5625, -0.25, -0.50, -0.5625, -0.25, -0.50, 0.4375, -0.25],  # back
-	[-0.50, 0.4375, -0.25, -0.50, -0.5625, -0.25, 0.50, -0.5625, -0.25, 0.50, 0.4375, -0.25],  # back
+	[
+		0.25,
+		0.4375,
+		0.50,
+		0.25,
+		-0.5625,
+		0.50,
+		0.25,
+		-0.5625,
+		-0.50,
+		0.25,
+		0.4375,
+		-0.50,
+	],  # right
+	[
+		0.25,
+		0.4375,
+		-0.50,
+		0.25,
+		-0.5625,
+		-0.50,
+		0.25,
+		-0.5625,
+		0.50,
+		0.25,
+		0.4375,
+		0.50,
+	],  # right
+	[
+		-0.25,
+		0.4375,
+		-0.50,
+		-0.25,
+		-0.5625,
+		-0.50,
+		-0.25,
+		-0.5625,
+		0.50,
+		-0.25,
+		0.4375,
+		0.50,
+	],  # left
+	[
+		-0.25,
+		0.4375,
+		0.50,
+		-0.25,
+		-0.5625,
+		0.50,
+		-0.25,
+		-0.5625,
+		-0.50,
+		-0.25,
+		0.4375,
+		-0.50,
+	],  # left
+	[
+		-0.50,
+		0.4375,
+		0.25,
+		-0.50,
+		-0.5625,
+		0.25,
+		0.50,
+		-0.5625,
+		0.25,
+		0.50,
+		0.4375,
+		0.25,
+	],  # front
+	[
+		0.50,
+		0.4375,
+		0.25,
+		0.50,
+		-0.5625,
+		0.25,
+		-0.50,
+		-0.5625,
+		0.25,
+		-0.50,
+		0.4375,
+		0.25,
+	],  # front
+	[
+		0.50,
+		0.4375,
+		-0.25,
+		0.50,
+		-0.5625,
+		-0.25,
+		-0.50,
+		-0.5625,
+		-0.25,
+		-0.50,
+		0.4375,
+		-0.25,
+	],  # back
+	[
+		-0.50,
+		0.4375,
+		-0.25,
+		-0.50,
+		-0.5625,
+		-0.25,
+		0.50,
+		-0.5625,
+		-0.25,
+		0.50,
+		0.4375,
+		-0.25,
+	],  # back
 ]
 
 tex_coords = [
diff --git a/episode-13/models/fire.py b/episode-13/models/fire.py
index dde4c2d..39db455 100644
--- a/episode-13/models/fire.py
+++ b/episode-13/models/fire.py
@@ -5,10 +5,62 @@
 colliders = []
 
 vertex_positions = [
-	[-0.3536, 0.5000, 0.3536, -0.3536, -0.5000, 0.3536, 0.3536, -0.5000, -0.3536, 0.3536, 0.5000, -0.3536],
-	[-0.3536, 0.5000, -0.3536, -0.3536, -0.5000, -0.3536, 0.3536, -0.5000, 0.3536, 0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, -0.3536, 0.3536, -0.5000, -0.3536, -0.3536, -0.5000, 0.3536, -0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, 0.3536, 0.3536, -0.5000, 0.3536, -0.3536, -0.5000, -0.3536, -0.3536, 0.5000, -0.3536],
+	[
+		-0.3536,
+		0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		0.5000,
+		-0.3536,
+	],
+	[
+		-0.3536,
+		0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		0.5000,
+		-0.3536,
+	],
 ]
 
 tex_coords = [
diff --git a/episode-13/models/flat.py b/episode-13/models/flat.py
index dfe9c72..b9cce78 100644
--- a/episode-13/models/flat.py
+++ b/episode-13/models/flat.py
@@ -5,8 +5,34 @@
 colliders = []
 
 vertex_positions = [
-	[0.5, -0.4375, 0.5, 0.5, -0.4375, -0.5, -0.5, -0.4375, -0.5, -0.5, -0.4375, 0.5],  # top
-	[-0.5, -0.4375, 0.5, -0.5, -0.4375, -0.5, 0.5, -0.4375, -0.5, 0.5, -0.4375, 0.5],  # bottom
+	[
+		0.5,
+		-0.4375,
+		0.5,
+		0.5,
+		-0.4375,
+		-0.5,
+		-0.5,
+		-0.4375,
+		-0.5,
+		-0.5,
+		-0.4375,
+		0.5,
+	],  # top
+	[
+		-0.5,
+		-0.4375,
+		0.5,
+		-0.5,
+		-0.4375,
+		-0.5,
+		0.5,
+		-0.4375,
+		-0.5,
+		0.5,
+		-0.4375,
+		0.5,
+	],  # bottom
 ]
 
 tex_coords = [
diff --git a/episode-13/models/ladder.py b/episode-13/models/ladder.py
index dde4c2d..39db455 100644
--- a/episode-13/models/ladder.py
+++ b/episode-13/models/ladder.py
@@ -5,10 +5,62 @@
 colliders = []
 
 vertex_positions = [
-	[-0.3536, 0.5000, 0.3536, -0.3536, -0.5000, 0.3536, 0.3536, -0.5000, -0.3536, 0.3536, 0.5000, -0.3536],
-	[-0.3536, 0.5000, -0.3536, -0.3536, -0.5000, -0.3536, 0.3536, -0.5000, 0.3536, 0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, -0.3536, 0.3536, -0.5000, -0.3536, -0.3536, -0.5000, 0.3536, -0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, 0.3536, 0.3536, -0.5000, 0.3536, -0.3536, -0.5000, -0.3536, -0.3536, 0.5000, -0.3536],
+	[
+		-0.3536,
+		0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		0.5000,
+		-0.3536,
+	],
+	[
+		-0.3536,
+		0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		0.5000,
+		-0.3536,
+	],
 ]
 
 tex_coords = [
diff --git a/episode-13/models/liquid.py b/episode-13/models/liquid.py
index 693638b..3926c43 100644
--- a/episode-13/models/liquid.py
+++ b/episode-13/models/liquid.py
@@ -8,12 +8,90 @@
 colliders = []
 
 vertex_positions = [
-	[0.500, 0.375, 0.500, 0.500, -0.625, 0.500, 0.500, -0.625, -0.500, 0.500, 0.375, -0.500],  # right
-	[-0.500, 0.375, -0.500, -0.500, -0.625, -0.500, -0.500, -0.625, 0.500, -0.500, 0.375, 0.500],  # left
-	[0.500, 0.375, 0.500, 0.500, 0.375, -0.500, -0.500, 0.375, -0.500, -0.500, 0.375, 0.500],  # top
-	[-0.500, -0.625, 0.500, -0.500, -0.625, -0.500, 0.500, -0.625, -0.500, 0.500, -0.625, 0.500],  # bottom
-	[-0.500, 0.375, 0.500, -0.500, -0.625, 0.500, 0.500, -0.625, 0.500, 0.500, 0.375, 0.500],  # front
-	[0.500, 0.375, -0.500, 0.500, -0.625, -0.500, -0.500, -0.625, -0.500, -0.500, 0.375, -0.500],  # back
+	[
+		0.500,
+		0.375,
+		0.500,
+		0.500,
+		-0.625,
+		0.500,
+		0.500,
+		-0.625,
+		-0.500,
+		0.500,
+		0.375,
+		-0.500,
+	],  # right
+	[
+		-0.500,
+		0.375,
+		-0.500,
+		-0.500,
+		-0.625,
+		-0.500,
+		-0.500,
+		-0.625,
+		0.500,
+		-0.500,
+		0.375,
+		0.500,
+	],  # left
+	[
+		0.500,
+		0.375,
+		0.500,
+		0.500,
+		0.375,
+		-0.500,
+		-0.500,
+		0.375,
+		-0.500,
+		-0.500,
+		0.375,
+		0.500,
+	],  # top
+	[
+		-0.500,
+		-0.625,
+		0.500,
+		-0.500,
+		-0.625,
+		-0.500,
+		0.500,
+		-0.625,
+		-0.500,
+		0.500,
+		-0.625,
+		0.500,
+	],  # bottom
+	[
+		-0.500,
+		0.375,
+		0.500,
+		-0.500,
+		-0.625,
+		0.500,
+		0.500,
+		-0.625,
+		0.500,
+		0.500,
+		0.375,
+		0.500,
+	],  # front
+	[
+		0.500,
+		0.375,
+		-0.500,
+		0.500,
+		-0.625,
+		-0.500,
+		-0.500,
+		-0.625,
+		-0.500,
+		-0.500,
+		0.375,
+		-0.500,
+	],  # back
 ]
 
 tex_coords = [
diff --git a/episode-13/models/plant.py b/episode-13/models/plant.py
index dde4c2d..39db455 100644
--- a/episode-13/models/plant.py
+++ b/episode-13/models/plant.py
@@ -5,10 +5,62 @@
 colliders = []
 
 vertex_positions = [
-	[-0.3536, 0.5000, 0.3536, -0.3536, -0.5000, 0.3536, 0.3536, -0.5000, -0.3536, 0.3536, 0.5000, -0.3536],
-	[-0.3536, 0.5000, -0.3536, -0.3536, -0.5000, -0.3536, 0.3536, -0.5000, 0.3536, 0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, -0.3536, 0.3536, -0.5000, -0.3536, -0.3536, -0.5000, 0.3536, -0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, 0.3536, 0.3536, -0.5000, 0.3536, -0.3536, -0.5000, -0.3536, -0.3536, 0.5000, -0.3536],
+	[
+		-0.3536,
+		0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		0.5000,
+		-0.3536,
+	],
+	[
+		-0.3536,
+		0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		0.5000,
+		-0.3536,
+	],
 ]
 
 tex_coords = [
diff --git a/episode-13/models/pressure_plate.py b/episode-13/models/pressure_plate.py
index dfe9c72..b9cce78 100644
--- a/episode-13/models/pressure_plate.py
+++ b/episode-13/models/pressure_plate.py
@@ -5,8 +5,34 @@
 colliders = []
 
 vertex_positions = [
-	[0.5, -0.4375, 0.5, 0.5, -0.4375, -0.5, -0.5, -0.4375, -0.5, -0.5, -0.4375, 0.5],  # top
-	[-0.5, -0.4375, 0.5, -0.5, -0.4375, -0.5, 0.5, -0.4375, -0.5, 0.5, -0.4375, 0.5],  # bottom
+	[
+		0.5,
+		-0.4375,
+		0.5,
+		0.5,
+		-0.4375,
+		-0.5,
+		-0.5,
+		-0.4375,
+		-0.5,
+		-0.5,
+		-0.4375,
+		0.5,
+	],  # top
+	[
+		-0.5,
+		-0.4375,
+		0.5,
+		-0.5,
+		-0.4375,
+		-0.5,
+		0.5,
+		-0.4375,
+		-0.5,
+		0.5,
+		-0.4375,
+		0.5,
+	],  # bottom
 ]
 
 tex_coords = [
diff --git a/episode-13/models/sign.py b/episode-13/models/sign.py
index dde4c2d..39db455 100644
--- a/episode-13/models/sign.py
+++ b/episode-13/models/sign.py
@@ -5,10 +5,62 @@
 colliders = []
 
 vertex_positions = [
-	[-0.3536, 0.5000, 0.3536, -0.3536, -0.5000, 0.3536, 0.3536, -0.5000, -0.3536, 0.3536, 0.5000, -0.3536],
-	[-0.3536, 0.5000, -0.3536, -0.3536, -0.5000, -0.3536, 0.3536, -0.5000, 0.3536, 0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, -0.3536, 0.3536, -0.5000, -0.3536, -0.3536, -0.5000, 0.3536, -0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, 0.3536, 0.3536, -0.5000, 0.3536, -0.3536, -0.5000, -0.3536, -0.3536, 0.5000, -0.3536],
+	[
+		-0.3536,
+		0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		0.5000,
+		-0.3536,
+	],
+	[
+		-0.3536,
+		0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		0.5000,
+		-0.3536,
+	],
 ]
 
 tex_coords = [
diff --git a/episode-13/models/sign_post.py b/episode-13/models/sign_post.py
index dde4c2d..39db455 100644
--- a/episode-13/models/sign_post.py
+++ b/episode-13/models/sign_post.py
@@ -5,10 +5,62 @@
 colliders = []
 
 vertex_positions = [
-	[-0.3536, 0.5000, 0.3536, -0.3536, -0.5000, 0.3536, 0.3536, -0.5000, -0.3536, 0.3536, 0.5000, -0.3536],
-	[-0.3536, 0.5000, -0.3536, -0.3536, -0.5000, -0.3536, 0.3536, -0.5000, 0.3536, 0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, -0.3536, 0.3536, -0.5000, -0.3536, -0.3536, -0.5000, 0.3536, -0.3536, 0.5000, 0.3536],
-	[0.3536, 0.5000, 0.3536, 0.3536, -0.5000, 0.3536, -0.3536, -0.5000, -0.3536, -0.3536, 0.5000, -0.3536],
+	[
+		-0.3536,
+		0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		0.5000,
+		-0.3536,
+	],
+	[
+		-0.3536,
+		0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		-0.3536,
+		0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		0.5000,
+		0.3536,
+	],
+	[
+		0.3536,
+		0.5000,
+		0.3536,
+		0.3536,
+		-0.5000,
+		0.3536,
+		-0.3536,
+		-0.5000,
+		-0.3536,
+		-0.3536,
+		0.5000,
+		-0.3536,
+	],
 ]
 
 tex_coords = [
diff --git a/episode-13/models/snow.py b/episode-13/models/snow.py
index 2a39aff..f77595d 100644
--- a/episode-13/models/snow.py
+++ b/episode-13/models/snow.py
@@ -5,8 +5,34 @@
 colliders = [[(-0.5, -0.5000, -0.5), (0.5, -0.4375, 0.5)]]
 
 vertex_positions = [
-	[0.5, -0.4375, 0.5, 0.5, -0.4375, -0.5, -0.5, -0.4375, -0.5, -0.5, -0.4375, 0.5],  # top
-	[-0.5, -0.4375, 0.5, -0.5, -0.4375, -0.5, 0.5, -0.4375, -0.5, 0.5, -0.4375, 0.5],  # bottom
+	[
+		0.5,
+		-0.4375,
+		0.5,
+		0.5,
+		-0.4375,
+		-0.5,
+		-0.5,
+		-0.4375,
+		-0.5,
+		-0.5,
+		-0.4375,
+		0.5,
+	],  # top
+	[
+		-0.5,
+		-0.4375,
+		0.5,
+		-0.5,
+		-0.4375,
+		-0.5,
+		0.5,
+		-0.4375,
+		-0.5,
+		0.5,
+		-0.4375,
+		0.5,
+	],  # bottom
 ]
 
 tex_coords = [
diff --git a/episode-13/models/torch.py b/episode-13/models/torch.py
index cda41d2..2db2d26 100644
--- a/episode-13/models/torch.py
+++ b/episode-13/models/torch.py
@@ -5,12 +5,64 @@
 colliders = []
 
 vertex_positions = [
-	[0.0625, 0.5, 0.5, 0.0625, -0.5, 0.5, 0.0625, -0.5, -0.5, 0.0625, 0.5, -0.5],  # right
-	[-0.0625, 0.5, -0.5, -0.0625, -0.5, -0.5, -0.0625, -0.5, 0.5, -0.0625, 0.5, 0.5],  # left
+	[
+		0.0625,
+		0.5,
+		0.5,
+		0.0625,
+		-0.5,
+		0.5,
+		0.0625,
+		-0.5,
+		-0.5,
+		0.0625,
+		0.5,
+		-0.5,
+	],  # right
+	[
+		-0.0625,
+		0.5,
+		-0.5,
+		-0.0625,
+		-0.5,
+		-0.5,
+		-0.0625,
+		-0.5,
+		0.5,
+		-0.0625,
+		0.5,
+		0.5,
+	],  # left
 	[0.5, 0.125, 0.5, 0.5, 0.125, -0.5, -0.5, 0.125, -0.5, -0.5, 0.125, 0.5],  # top
 	[-0.5, -0.5, 0.5, -0.5, -0.5, -0.5, 0.5, -0.5, -0.5, 0.5, -0.5, 0.5],  # bottom
-	[-0.5, 0.5, 0.0625, -0.5, -0.5, 0.0625, 0.5, -0.5, 0.0625, 0.5, 0.5, 0.0625],  # front
-	[0.5, 0.5, -0.0625, 0.5, -0.5, -0.0625, -0.5, -0.5, -0.0625, -0.5, 0.5, -0.0625],  # back
+	[
+		-0.5,
+		0.5,
+		0.0625,
+		-0.5,
+		-0.5,
+		0.0625,
+		0.5,
+		-0.5,
+		0.0625,
+		0.5,
+		0.5,
+		0.0625,
+	],  # front
+	[
+		0.5,
+		0.5,
+		-0.0625,
+		0.5,
+		-0.5,
+		-0.0625,
+		-0.5,
+		-0.5,
+		-0.0625,
+		-0.5,
+		0.5,
+		-0.0625,
+	],  # back
 ]
 
 tex_coords = [
diff --git a/episode-13/src/chunk/chunk.py b/episode-13/src/chunk/chunk.py
index 91d07b0..b2049a2 100644
--- a/episode-13/src/chunk/chunk.py
+++ b/episode-13/src/chunk/chunk.py
@@ -3,7 +3,12 @@
 
 import pyglet.gl as gl
 
-from src.chunk.subchunk import SUBCHUNK_HEIGHT, SUBCHUNK_LENGTH, SUBCHUNK_WIDTH, Subchunk
+from src.chunk.subchunk import (
+	SUBCHUNK_HEIGHT,
+	SUBCHUNK_LENGTH,
+	SUBCHUNK_WIDTH,
+	Subchunk,
+)
 
 CHUNK_WIDTH = 16
 CHUNK_HEIGHT = 128
diff --git a/episode-13/src/chunk/subchunk.py b/episode-13/src/chunk/subchunk.py
index 4ef16a7..1683a96 100644
--- a/episode-13/src/chunk/subchunk.py
+++ b/episode-13/src/chunk/subchunk.py
@@ -71,7 +71,11 @@ def add_face(face):
 					if block_number:
 						block_type = self.world.block_types[block_number]
 
-						x, y, z = (self.position[0] + local_x, self.position[1] + local_y, self.position[2] + local_z)
+						x, y, z = (
+							self.position[0] + local_x,
+							self.position[1] + local_y,
+							self.position[2] + local_z,
+						)
 
 						def can_render_face(position):
 							if not self.world.is_opaque_block(position):
diff --git a/episode-13/src/entity/entity.py b/episode-13/src/entity/entity.py
index 5bad89d..d3ed3ee 100644
--- a/episode-13/src/entity/entity.py
+++ b/episode-13/src/entity/entity.py
@@ -109,7 +109,11 @@ def update(self, delta_time):
 
 			for i in range(x - step_x * (steps_xz + 1), cx + step_x * (steps_xz + 2), step_x):
 				for j in range(y - step_y * (steps_y + 2), cy + step_y * (steps_y + 3), step_y):
-					for k in range(z - step_z * (steps_xz + 1), cz + step_z * (steps_xz + 2), step_z):
+					for k in range(
+						z - step_z * (steps_xz + 1),
+						cz + step_z * (steps_xz + 2),
+						step_z,
+					):
 						pos = (i, j, k)
 						num = self.world.get_block_number(pos)
 
diff --git a/episode-13/src/physics/collider.py b/episode-13/src/physics/collider.py
index 75dbd8d..7d4f114 100644
--- a/episode-13/src/physics/collider.py
+++ b/episode-13/src/physics/collider.py
@@ -9,7 +9,10 @@ def __init__(self, pos1=(None,) * 3, pos2=(None,) * 3):
 	def __add__(self, pos):
 		x, y, z = pos
 
-		return Collider((self.x1 + x, self.y1 + y, self.z1 + z), (self.x2 + x, self.y2 + y, self.z2 + z))
+		return Collider(
+			(self.x1 + x, self.y1 + y, self.z1 + z),
+			(self.x2 + x, self.y2 + y, self.z2 + z),
+		)
 
 	def __and__(self, collider):
 		x = min(self.x2, collider.x2) - max(self.x1, collider.x1)
diff --git a/episode-13/src/renderer/block_type.py b/episode-13/src/renderer/block_type.py
index 395cdd7..3f5ac0a 100644
--- a/episode-13/src/renderer/block_type.py
+++ b/episode-13/src/renderer/block_type.py
@@ -6,7 +6,11 @@
 class BlockType:
 	# new optional model argument (cube model by default)
 	def __init__(
-		self, texture_manager, name="unknown", block_face_textures={"all": "cobblestone"}, model: Any = models.cube
+		self,
+		texture_manager,
+		name="unknown",
+		block_face_textures={"all": "cobblestone"},
+		model: Any = models.cube,
 	):
 		self.name = name
 		self.block_face_textures = block_face_textures
@@ -71,4 +75,7 @@ def set_block_face(face, texture):
 				set_block_face(5, texture_index)
 
 			else:
-				set_block_face(["right", "left", "top", "bottom", "front", "back"].index(face), texture_index)
+				set_block_face(
+					["right", "left", "top", "bottom", "front", "back"].index(face),
+					texture_index,
+				)
diff --git a/episode-13/src/renderer/matrix.py b/episode-13/src/renderer/matrix.py
index 16ecf04..b3b965f 100644
--- a/episode-13/src/renderer/matrix.py
+++ b/episode-13/src/renderer/matrix.py
@@ -127,7 +127,14 @@ def perspective(self, fovy, aspect, near, far):
 		frustum_y = math.tan(math.radians(fovy) / 2)
 		frustum_x = frustum_y * aspect
 
-		self.frustum(-frustum_x * near, frustum_x * near, -frustum_y * near, frustum_y * near, near, far)
+		self.frustum(
+			-frustum_x * near,
+			frustum_x * near,
+			-frustum_y * near,
+			frustum_y * near,
+			near,
+			far,
+		)
 
 	def orthographic(self, left, right, bottom, top, near, far):
 		deltax = right - left
diff --git a/episode-13/src/renderer/shader.py b/episode-13/src/renderer/shader.py
index 5c48a41..610c710 100644
--- a/episode-13/src/renderer/shader.py
+++ b/episode-13/src/renderer/shader.py
@@ -2,8 +2,7 @@
 import pyglet.gl as gl
 
 
-class ShaderError(Exception):
-	...
+class ShaderError(Exception): ...
 
 
 def create_shader(target, source_path):
@@ -16,7 +15,8 @@ def create_shader(target, source_path):
 	source_buffer = ctypes.create_string_buffer(source)
 
 	buffer_pointer = ctypes.cast(
-		ctypes.pointer(ctypes.pointer(source_buffer)), ctypes.POINTER(ctypes.POINTER(ctypes.c_char))
+		ctypes.pointer(ctypes.pointer(source_buffer)),
+		ctypes.POINTER(ctypes.POINTER(ctypes.c_char)),
 	)
 
 	# compile shader
diff --git a/episode-13/src/save.py b/episode-13/src/save.py
index d38522a..9fbc40a 100644
--- a/episode-13/src/save.py
+++ b/episode-13/src/save.py
@@ -13,7 +13,12 @@ def chunk_position_to_path(self, chunk_position):
 		x, _, z = chunk_position
 
 		chunk_path = "/".join(
-			(self.path, base36.dumps(x % 64), base36.dumps(z % 64), f"c.{base36.dumps(x)}.{base36.dumps(z)}.dat")
+			(
+				self.path,
+				base36.dumps(x % 64),
+				base36.dumps(z % 64),
+				f"c.{base36.dumps(x)}.{base36.dumps(z)}.dat",
+			)
 		)
 
 		return chunk_path
diff --git a/episode-5/block_type.py b/episode-5/block_type.py
index a931fce..a78bbbb 100644
--- a/episode-5/block_type.py
+++ b/episode-5/block_type.py
@@ -8,9 +8,7 @@ def __init__(self, texture_manager, name="unknown", block_face_textures={"all":
 		# set our block type's vertex positions, texture coordinates, and indices to the default values in our numbers.py file
 
 		self.vertex_positions = numbers.vertex_positions
-		self.tex_coords = (
-			numbers.tex_coords.copy()
-		)  # we need to create a copy of this, since we need to modify our texture coordinates in a different way for each block type (to have different textures per block)
+		self.tex_coords = numbers.tex_coords.copy()  # we need to create a copy of this, since we need to modify our texture coordinates in a different way for each block type (to have different textures per block)
 		self.indices = numbers.indices
 
 		def set_block_face(face, texture):  # set a specific face of the block to a certain texture