diff --git a/arcade/__init__.py b/arcade/__init__.py
index a4c812d3e..7a13f3c33 100644
--- a/arcade/__init__.py
+++ b/arcade/__init__.py
@@ -199,9 +199,12 @@ def configure_logging(level: int | None = None):
 from .tilemap import read_tmx
 from .tilemap import TileMap
 
-from .pymunk_physics_engine import PymunkPhysicsEngine
-from .pymunk_physics_engine import PymunkPhysicsObject
-from .pymunk_physics_engine import PymunkException
+try:
+    from .pymunk_physics_engine import PymunkPhysicsEngine
+    from .pymunk_physics_engine import PymunkPhysicsObject
+    from .pymunk_physics_engine import PymunkException
+except ImportError:
+    print("Pymunk is not installed. Pymunk physics engine will not be available.")
 
 from .version import VERSION
 
diff --git a/arcade/camera/camera_2d.py b/arcade/camera/camera_2d.py
index 549009b3f..a1a03ae4b 100644
--- a/arcade/camera/camera_2d.py
+++ b/arcade/camera/camera_2d.py
@@ -484,8 +484,8 @@ def point_in_view(self, point: Point2) -> bool:
         """
         # This is unwrapped from standard Vec2 operations,
         # The construction and garbage collection of the vectors would
-        # increase this method's cost by ~4x 
-        
+        # increase this method's cost by ~4x
+
         pos = self.position
         diff = point[0] - pos[0], point[1] - pos[1]
 
@@ -569,7 +569,6 @@ def projection(self) -> Rect:
 
     @projection.setter
     def projection(self, value: Rect) -> None:
-
         # Unpack and validate
         if not value:
             raise ZeroProjectionDimension((f"Projection area is 0, {value.lrbt}"))
diff --git a/arcade/future/splash.py b/arcade/future/splash.py
index 5f3318fc6..b9dde31fc 100644
--- a/arcade/future/splash.py
+++ b/arcade/future/splash.py
@@ -21,7 +21,7 @@ class ArcadeSplash(View):
         dark_mode: If True, the splash screen will be shown in dark mode. (Default False)
     """
 
-    def __init__(self, view: View, duration: int = 3, dark_mode: bool = False):
+    def __init__(self, view: View, duration: float = 3.0, dark_mode: bool = False):
         super().__init__()
         self._next_view = view
         self._duration = duration
diff --git a/arcade/hitbox/__init__.py b/arcade/hitbox/__init__.py
index ab5d304dc..ae79fa3b1 100644
--- a/arcade/hitbox/__init__.py
+++ b/arcade/hitbox/__init__.py
@@ -6,18 +6,24 @@
 
 from .base import HitBox, HitBoxAlgorithm, RotatableHitBox
 from .bounding_box import BoundingHitBoxAlgorithm
-from .pymunk import PymunkHitBoxAlgorithm
 from .simple import SimpleHitBoxAlgorithm
 
 #: The simple hit box algorithm.
 algo_simple = SimpleHitBoxAlgorithm()
-#: The detailed hit box algorithm.
-algo_detailed = PymunkHitBoxAlgorithm()
 #: The bounding box hit box algorithm.
 algo_bounding_box = BoundingHitBoxAlgorithm()
 #: The default hit box algorithm.
 algo_default = algo_simple
 
+#: The detailed hit box algorithm, if pymunk available.
+try:
+    from .pymunk import PymunkHitBoxAlgorithm
+
+    algo_detailed = PymunkHitBoxAlgorithm()
+except ImportError:
+    algo_detailed = None  # type: ignore
+    print("Warning: pymunk is not installed. PymunkHitBoxAlgorithm will not be available.")
+
 
 # Temporary functions for backwards compatibility
 def calculate_hit_box_points_simple(image: Image, *args) -> Point2List:
@@ -46,6 +52,7 @@ def calculate_hit_box_points_detailed(
             How detailed to make the hit box. There's a
             trade-off in number of points vs. accuracy.
     """
+    assert algo_detailed, "PymunkHitBoxAlgorithm is not available."
     return algo_detailed.calculate(image, detail=hit_box_detail)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 515e1b6f6..fd21bcd67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -86,6 +86,8 @@ version = { attr = "arcade.version.VERSION" }
 requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
 
+[tool.uv]
+prerelease = "allow"
 
 [tool.ruff]
 # --- Description of what we ignore ---