Just played this on Arch Linux and I like it. The switching function makes it more of a thinking game. Hope you enjoy.
Open Sonic is an 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. Unlike most similar games, Open Sonic provides a greater level of interaction between the player and the levels. It's more than just a jump'n'run; the user must come up with some strategy in order to get through the levels.
Open Sonic is available for Windows and Linux. The latest release is 0.1.4 (September 19th, 2010). Main features:
* It's portable! No installation is required!
* Sonic-style physics (360° movement engine)
* Available in 9
languages: English, Portuguese, French, Polish, German, Czech, Dutch, Indonesian, Italian
* 2 levels + innovative items + extras
* You can
create your own levels using the built-in level editor
* You can make your own custom items, enemies and bosses using our
object scripting system * MODdable capabilities
* Good performance even on old computers*
0.1.4 is the last release of Open Sonic. The next version will be Open Surge 0.2.0, a free game inspired in the classic Sonic gameplay featuring nothing but original user-made free (as in freedom) resources: graphics, characters, sound effects, musics, plot, levels, etc. Open Surge also features an improved physics system. Try the bleeding edge version!