Pygame
Pygame is a fun way to make very basic games using Python.
Basic Animation
This shows how to do a very basic animation using Pygame. Pygame is actually not recommended for animations like this - Processing is typically a better way.
Basic Top-Down Game
This game is extremely simple, but it shows a bit of what is possible with Pygame - and it could be extended significantly, into something like Chip's Challenge.
Better Top-Down Game
This game is another example of a top-down game, but it is a little more elaborate.
Star Pusher
This game is difficult but fun.
Squirrel Eat Squirrel
This game is a little more elaborate. It's kind of like Katamari Damacy or Agar.io - basically, the goal is to eat smaller squirrels, while avoiding larger squirrels. Try to get as big as possible!
To Do List - GUI
This is an example of how it is possible to create a Graphical User Interface using Python.
Book
Making Games with Python & Pygame Book
This book contains guides to create a ton of cool games with Python and Pygame.