diff --git a/src/pycreative/app.py b/src/pycreative/app.py
index 0cd61d3..5bc4c45 100644
--- a/src/pycreative/app.py
+++ b/src/pycreative/app.py
@@ -1060,6 +1060,16 @@ def rect(self, x, y, w, h, fill=None, stroke=None, stroke_width=None):
         # forward per-call styles to Surface.rect
         self.surface.rect(x, y, w, h, fill=fill, stroke=stroke, stroke_weight=stroke_width)
 
+    def square(self, x, y, s, fill=None, stroke=None, stroke_width=None):
+        """Compatibility wrapper: draw a square with side s at (x,y).
+
+        Forwards to `Surface.square` so behavior matches the Surface API and
+        existing examples that call `square(...)`.
+        """
+        if self.surface is None:
+            return
+        self.surface.square(x, y, s, fill=fill, stroke=stroke, stroke_weight=stroke_width)
+
     def triangle(self, x1, y1, x2, y2, x3, y3, fill: ColorTupleOrNone = None, stroke: ColorTupleOrNone = None, stroke_width: Optional[int] = None):
         if self.surface is None:
             return
diff --git a/src/pycreative/graphics.py b/src/pycreative/graphics.py
index 2f6d317..3435240 100644
--- a/src/pycreative/graphics.py
+++ b/src/pycreative/graphics.py
@@ -523,6 +523,21 @@ def rect(
         # alpha-aware compositing and transform handling.
         return _primitives.rect(self, x, y, w, h, fill=fill, stroke=stroke, stroke_weight=stroke_weight, stroke_width=stroke_width, cap=cap, join=join)
 
+    def square(
+        self,
+        x: float,
+        y: float,
+        s: float,
+        fill: Optional[Tuple[int, ...]] = None,
+        stroke: Optional[Tuple[int, ...]] = None,
+        stroke_weight: Optional[int] = None,
+        stroke_width: Optional[int] = None,
+        cap: Optional[str] = None,
+        join: Optional[str] = None,
+    ) -> None:
+        """Draw a square (convenience wrapper): forwards to primitives.square()."""
+        return _primitives.square(self, x, y, s, fill=fill, stroke=stroke, stroke_weight=stroke_weight, stroke_width=stroke_width, cap=cap, join=join)
+
  
 
     def ellipse(
diff --git a/src/pycreative/primitives.py b/src/pycreative/primitives.py
index 1927db0..0bb952b 100644
--- a/src/pycreative/primitives.py
+++ b/src/pycreative/primitives.py
@@ -162,6 +162,38 @@ def rect(surface, x: float, y: float, w: float, h: float, fill: Optional[Tuple[i
         surface._line_join = prev_join
 
 
+def square(
+    surface,
+    x: float,
+    y: float,
+    s: float,
+    fill: Optional[Tuple[int, ...]] = None,
+    stroke: Optional[Tuple[int, ...]] = None,
+    stroke_weight: Optional[int] = None,
+    stroke_width: Optional[int] = None,
+    cap: Optional[str] = None,
+    join: Optional[str] = None,
+) -> None:
+    """Draw a square with side length `s`.
+
+    This is a thin wrapper that forwards to `rect()` using `w = h = s` so
+    behavior (modes, transforms, alpha handling) is shared with rectangles.
+    """
+    return rect(
+        surface,
+        x,
+        y,
+        s,
+        s,
+        fill=fill,
+        stroke=stroke,
+        stroke_weight=stroke_weight,
+        stroke_width=stroke_width,
+        cap=cap,
+        join=join,
+    )
+
+
 def ellipse(surface, x: float, y: float, w: float, h: float, fill: Optional[Tuple[int, ...]] = None, stroke: Optional[Tuple[int, ...]] = None, stroke_weight: Optional[int] = None, stroke_width: Optional[int] = None, cap: Optional[str] = None, join: Optional[str] = None) -> None:
     if surface._ellipse_mode == surface.MODE_CENTER:
         cx = x
diff --git a/src/pycreative/utils.py b/src/pycreative/utils.py
index fde7ac0..a0b815c 100644
--- a/src/pycreative/utils.py
+++ b/src/pycreative/utils.py
@@ -1,7 +1,36 @@
-from __future__ import annotations
+"""Small utility helpers for PyCreative.
 
-from typing import Tuple, Iterable
-import pygame
+This module provides a Processing-like `size()` helper that wraps Python's
+`len()` for sized objects, and a tiny `IntList` convenience wrapper that adds
+a `.size()` method (mirroring Processing's IntList.size()).
+
+Keep this module minimal: it intentionally avoids heavy dependencies and uses
+duck-typing for objects that implement `__len__`.
+"""
+from typing import Any, Tuple
+
+__all__ = ["size", "IntList"]
+
+
+def size(obj: Any) -> int:
+    """Return the length of `obj`, mirroring Processing's size() behavior for collections.
+
+    Raises a TypeError if the object does not define `__len__`.
+    """
+    if hasattr(obj, "__len__"):
+        return len(obj)
+    raise TypeError(f"object of type {type(obj)!r} has no len()")
+
+
+class IntList(list):
+    """A tiny list[int] wrapper that exposes a `.size()` method.
+
+    Use when you want Processing-like `.size()` semantics while still getting
+    full list behavior (append, pop, iteration, etc.).
+    """
+
+    def size(self) -> int:
+        return len(self)
 
 
 def has_alpha(color: object) -> bool:
@@ -9,18 +38,27 @@ def has_alpha(color: object) -> bool:
     return isinstance(color, tuple) and len(color) == 4 and color[3] != 255
 
 
-def bbox_of_points(points: Iterable[tuple[int, int]]) -> tuple[int, int, int, int]:
-    xs = [p[0] for p in points]
-    ys = [p[1] for p in points]
-    return min(xs), min(ys), max(xs), max(ys)
+def draw_alpha_polygon_on_temp(surface_surf: Any, temp_surf: Any, points: list[tuple[float, float]], color: Tuple[int, ...], dest_x: int, dest_y: int) -> None:
+    """Draw a polygon on a temporary surface and blit it to `surface_surf`.
 
+    The function imports pygame lazily so importing this module doesn't require
+    pygame to be installed at import-time.
+    """
+    import pygame
 
-def draw_alpha_polygon_on_temp(surface_surf: pygame.Surface, temp_surf: pygame.Surface, points: list[tuple[float, float]], color: Tuple[int, ...], dest_x: int, dest_y: int) -> None:
     rel_pts = [(int(round(px)), int(round(py))) for px, py in points]
     pygame.draw.polygon(temp_surf, color, rel_pts)
     surface_surf.blit(temp_surf, (dest_x, dest_y))
 
 
-def draw_alpha_rect_on_temp(surface_surf: pygame.Surface, temp_surf: pygame.Surface, rect: pygame.Rect, color: Tuple[int, ...]) -> None:
+def draw_alpha_rect_on_temp(surface_surf: Any, temp_surf: Any, rect: Any, color: Tuple[int, ...]) -> None:
+    """Draw a rect on a temporary surface and blit it to `surface_surf`.
+
+    `rect` is expected to be a pygame.Rect-like object with width/height/left/top
+    attributes. We import pygame lazily to avoid hard runtime dependency at import-time.
+    """
+    import pygame
+
     pygame.draw.rect(temp_surf, color, pygame.Rect(0, 0, rect.width, rect.height))
     surface_surf.blit(temp_surf, (rect.left, rect.top))
+
diff --git a/tests/test_square_primitive.py b/tests/test_square_primitive.py
new file mode 100644
index 0000000..38a7261
--- /dev/null
+++ b/tests/test_square_primitive.py
@@ -0,0 +1,34 @@
+import sys
+import pathlib
+
+
+# Make src/ available on sys.path so tests can import the editable package
+_here = pathlib.Path(__file__).resolve()
+_repo = _here.parents[1]
+src = _repo / "src"
+if str(src) not in sys.path:
+    sys.path.insert(0, str(src))
+
+
+def test_square_draw_headless(monkeypatch):
+    # Initialize pygame in headless mode before importing it
+    monkeypatch.setenv("SDL_VIDEODRIVER", "dummy")
+    import pygame
+    from pycreative.graphics import Surface
+
+    pygame.init()
+    surf = pygame.Surface((100, 100))
+    g = Surface(surf)
+
+    # Clear to black
+    g.clear((0, 0, 0))
+
+    # Draw a centered white square at (50,50) with side 20
+    g.rect_mode(Surface.MODE_CENTER)
+    g.fill((255, 255, 255))
+    g.square(50, 50, 20)
+
+    # Pixel at center should be white
+    assert surf.get_at((50, 50))[:3] == (255, 255, 255)
+
+    pygame.quit()