I've been developing a new game based on the SuperTux graphics/sounds/music called ReTux. Some of you may be aware of this; I've mentioned this project a couple of times before on the IRC channel, and I also made a post about it on these forums.
One thing that I simply couldn't live with in SuperTux's graphics was the lack of a proper run animation for Tux, so I paid an artist to make one. SuperTux might have a use for it, so I've packed all of the Tux sprites used by ReTux into an archive along with the relevant license info. That archive can be found here:
http://download.savannah.gnu.org/releas ... tes.tar.gz
Since ReTux only uses the small Tux sprites, this is only for small Tux. Additionally, it's in the split-sprite format that SuperTux 0.3.0 uses; to get a single image, simply paste the arms over the respective body component (the images are the same size, and the arms are positioned accordingly).