Key Ideas
1convert()/convert_alpha(). Matches pixel format to the display — the single biggest, cheapest blitting speedup.
2Sprite Group Efficiency. Use pygame.sprite.Group.draw()/.update() rather than manual loops for cleaner, often faster code.
3Profiling First. Measure with cProfile before optimizing — don't guess where the slowdown actually is.
4PyInstaller. Packages your .py script + dependencies into a standalone .exe/app users can run without installing Python.
5Publishing. itch.io is the standard free hosting platform for indie/hobby Pygame projects — upload the packaged build + a description page.