Are there any Python game libraries (Pygame, Pyglet, etc.) with support for RPython? Or game libraries specifically made for RPython? Or bindings for a game library for RPython?
RPython is not Python. They are different languages even though it just so happens that you can execute RPython code with a Python interpreter and get similar effects (much more slowly) to running the compiled RPython program. It is extremely unlikely for there to ever be any reasonable Python library (game library or any other kind) that also works in RPython. It would have to be specifically written for RPython, and if it worked in RPython it would be so inflexible when considered as a regular Python library that nobody would use it in that context.
If you want to program in a lower level compiled language with game libraries, use C# or Java. RPython is not a good competitor (in large part because it has very few libraries for anything, not even much of a standard library).
If you want to program in Python, use Python (possibly use the PyPy implementation of Python, which can be faster than the standard Python interpreter if it supports all the libraries you're using). RPython will not help you write Python code that goes faster.
If your goal is not to specifically produce a game, but rather to do some project in RPython because you want to learn RPython specifically, then that's a perfectly reasonable aim. But writing a game in will probably not be the most helpful project for learning to write RPython; you should probably consider writing some sort of interpreter instead, since that's what RPython is designed to do.
Game Library with Support for RPython