OpenSonic is a free open-source game based on the "Sonic the Hedgehog" universe. It introduces a different style of gameplay called cooperative play, in which it's possible to control 3 characters simultaneously. See http://opensnc.sourceforge.net/home/index.php for more details about it.
Thanks to Hitnrun who ported allegro to pandora, i've been abled to modify a bit OpenSonic (mainly to get a fullscreen and to add frame skip option) and run it on my pandora.
It might be good to overclock a bit for better performances.
Sources are included, and this package is under the GNU public license, read doc files for more information about it.
OpenSonic for pandora
PS: This port is dedicated to my son Alex ...