Castle Game Engine - Coming to Delphi!

 castle-engine https://castle-engine.io/wp/

Castle Game Engine from DelphiCon

 https://github.com/castle-engine/castle-engine

https://delphicon.embarcadero.com/talks/castle-game-engine-coming-to-delphi/ 

https://wiki.lazarus.freepascal.org/Choosing_a_Game_Engine

http://www.zgameeditor.org/

https://www.pascalgamedevelopment.com/content.php

http://www.clootie.ru/

https://delphigl.com/

https://sourceforge.net/projects/andorra/

https://castle-engine.io/

http://zengl.org/

https://asphyre.net/

https://en.wikipedia.org/wiki/GLScene

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https://en.wikipedia.org/wiki/Graphics32

Image32 - A 2D graphics library for Delphi

Clipper 6.4.0 - NuGet

LazRGBGraphics http://wiki.freepascal.org/LazRGBGraphics
BGRABitmap http://wiki.freepascal.org/BGRABitmap
AggPas http://www.crossgl.com/aggpas/
fpVectorial http://wiki.freepascal.org/fpvectorial
Andorra 2D http://andorra.sourceforge.net/
Graphics32 http://graphics32.org

http://allegro-pas.sourceforge.net/

https://imaginglib.sourceforge.io/

http://www.efg2.com/

Skia4Delphi

AntiAliasing graphics library roundup for Delphi

https://githubhelp.com/topic/delphi-library

https://torry.net/pages.php?s=72

https://awesomeopensource.com/projects/object-pascal

http://www.felix-colibri.com/papers/graphic/delphi_3d_designer/delphi_3d_designer.html

https://giters.com/topics/delphi-library

https://gitplanet.com/language/delphi

 Python for Delphi (P4D)