There are 2 repositories under upbge topic.
A utility to generate Python API stubs from documentation files in reStructuredText format
Fake BGE API module collection for the code completion.
UPBGE Manual
UPBGEMultiplayerOnline is a base for creating online multiplayer games using 100% custom-made code. It's a free and open-source project with Python, designed and tested on UPBGE 0.2.4x (Blender Game Engine - BGE).
A detailed comparison of Armory3D & UPBGE
Fake Blender 2.79 Python API for code completion, including BGE
A free and open-source FPS template for UPBGE
Easy Emit Addon, Adjusted and modified version for UPBGE 0.2.4x, original version: https://blenderartists.org/t/easyemit-update-13-06-2013/528897
Game made on BGE for the game jam BGMC 30, on Blender Artists
Game made for the game jam BGMC 32, with the themes: Space / Wordless Storytelling
Using Seyit Ali YAPRAKCI's tutorial to make a slither.io clone in Blender UPBGE with python
ملف للبدء بالعمل عليه
Simulação interativa de interação de radiação com a matéria feita no Blender Game Engine.
Guide to debugging Blender/BGE/UPBGE crashes
My personal sketchbook