After a bit of work, I've gotten a Tetris clone running on my Kobo Touch!
Here's a video
Also, pygame should now be able to load all image formats normally supported,
not just .bmp files. You can download the updated pygame
here. Install by
copying KoboRoot.tgz to the .kobo folder on your touch. Tetris is installed in the
directory "/mnt/onboard/.python/"