Pyzzle is a cross-platform game engine for creating large-scale, 2D Myst-like adventure games. The engine supports 2D panoramas, features an intuitive design mode, and allows users to download content from the internet. Pyzzle is written using Pygame.
Mathfun.py is a Pythonlibrary that contains those little bits of mathemagical ideas that we all enjoy. Primes, prime factorization, Fibonacci sequences, string2value functions...