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Easily Build A Python GUI For Video Games and Other Multimedia Applications Using Pygame Library In A Delphi Windows App

This Is The DelphiVCLApplicationModalFinished Method

Are you looking for an open-source library to create video games and other multimedia applications in your GUI App? This post will get you to understand how to use the pygame Python Library using Python4Delphi (P4D) in the Delphi/C++ Builder application and create interesting Aliens or Space Invaders games. 

Pygame is a free and open-source cross-platform library for the development of multimedia applications like video games using Python. It uses the Simple DirectMedia Layer (SDL) library and several other popular libraries to abstract the most common functions, making writing these programs a more intuitive task.

Pygame is highly portable and runs on nearly every platform and operating system. Pygame is free and has been downloaded millions of times. Pygame is released under the LGPL licence, which you can create open source, freeware, shareware, and commercial games with it.


Demo: Create a Space Invaders Game

This post will guide you on how to create a simple but addicting game using Python’s Pygame and then display it in the Delphi Windows GUI app.
First, open and run our Python GUI using project Demo1 from Python4Delphi with RAD Studio. Then insert the script into the lower Memo, click the Execute button, and get the result in the upper Memo. You can find the Demo1 source on GitHub. The behind the scene details of how Delphi manages to run your Python code in this amazing Python GUI can be found at this link.

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Let’s run the Space Invaders Game demo of the Pygame library. It will show you a mini-game where you have to defend against aliens. The following code is credited to René Dudfield (@illume), Thomas Kluyver (@takluyver), and Charles (@charlesej) (visit the source here):

What does it show you about Pygame?

  • pg.sprite, the difference between Sprite and Group.
  • Dirty rectangle optimization for processing for speed.
  • Music with, including fadeout.
  • Sound effects with pg.Sound.
  • Event processing, keyboard handling, QUIT handling.
  • The main loop frame is limited with a game clock from pg.time.Clock.
  • Fullscreen switching.


  • Left and right arrows to move.
  • Spacebar to shoot
  • f key to toggle between fullscreen.

Let’s see the result in Python GUI, and enjoy your game!

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Congratulations, now you have learned how to create a simple but addicting game using Python’s Pygame and then display it in the Delphi Windows GUI app. Now you can try all interesting examples from their Github using the Pygame library and Python4Delphi.

Check out the Pygame library for Python and use it in your projects:  and

Check out Python4Delphi which easily allows you to build Python GUIs for Windows using Delphi:

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