upbge

The premium Open Source alternative to Unity

🎯 Best for:Developers who want to build games using Blender's native tools and Python.
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What is upbge?

A fork of the Blender Game Engine providing a real-time logic and physics environment within the Blender UI. It allows developers to create interactive 3D applications without the need for asset export cycles.

Tech Stack
C++Game Development

Why upbge?

  • Seamless modeling-to-game workflow
  • Powerful Python API
  • Integrated Bullet physics

Limitations

  • Smaller ecosystem than Unity/Godot
  • Performance overhead of Blender UI
  • Limited mobile deployment options
3/5/2026
Last Update
218
Forks
144
Issues
Other
License
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Competitor Cost
-$1,440
/ year (est. based on Unity)
Self-Hosted
$0
/ year
Team Size10 Users
150+
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