Answer: Here are some general guidelines: 1  If the images are for the Web or online, use JPEG, PNG, or GIF. 2  If the images are for print, use TIFF. 3  If you want to keep a version that remains editable, choose your software's native file format. ( 4 PSD for Photoshop, PSP for Paint Shop Pro, CPT for Corel Photo-Paint, etc.).
PyGame is a Python package for game development: http://www.pygame.org/. I would like to see some examples of what is possible. The genre doesn't matter to me. In fact, I would like to see different genres of games.
Where can I find simple Pygame examples? The book Making Games with Python & Pygame has the source code for several simple games (Tetris, Bejeweled, Nibbles, etc.) with detailed explanation. The Pygame documents folder in the download contains several examples. These examples include the chimp program from the tutorials as well as two versions of aliens.