Python at play

Every programmer remembers the first time something they wrote moved on the screen because they pressed a key. Python at Play takes that moment and keeps going, all the way to a finished, polished game that anyone in the world can download, play, and improve.

This is a hands-on guide for beginners in game development who know basic Python. You will learn by building four projects of increasing size, at a fictional indie studio called Lantern Pixel:

- Bounce Duel, a two-player paddle game that teaches the game loop, drawing, movement, input, and collisions.

- Star Courier, an arcade space game with sprites, sound, menus, scenes, and animation.

- Lantern Run, a side-scrolling platformer with tile maps, platformer physics, a smooth camera, enemy AI, particles, and dynamic lighting.

- Lantern Run as a professional open-source release, with saving, tests, automated builds, and community contributions.

What you will learn:

- Real-time programming: the game loop, delta time, vectors, and collisions

- Platformer physics that feel great: coyote time, jump buffering, and variable jumps

- Cameras, parallax scrolling, screen shake, particles, and light-and-darkness effects

- Enemy AI with state machines and path finding

- Game design: core loops, difficulty curves, level design, and playtesting

- Professional skills: safe saving, profiling, automated testing with pytest, and packaging with PyInstaller and pygbag for the web

- Open source: choosing licenses, GitHub and continuous integration, accepting contributions, publishing on itch.io, and joining game jams

What makes this book different:

- Every code listing is complete and was run to produce the output and screenshots you see in the book.

- All art, sounds, and levels come from a small CC0 script included in the book, so your game looks exactly like the screenshots, with no downloads required.

- Each chapter includes a Studio Brief, clear diagrams, Common Mistakes boxes, practical recipes, a Build It project step, a summary, and exercises.

- Appendices include a Python refresher, a pygame-ce quick reference, math for games, common errors and fixes, solutions to selected exercises, and a glossary.

By the end, you will not just know how to make games. You will know how to finish them, share them, and build them together with other people.

Requirements: basic Python (variables, loops, functions, lists, and dictionaries), Python 3.10 or later, and a computer running Windows, macOS, or Linux.