http://soaos.sourceforge.net/
You can get the first chapter completely free or you can buy the 6 chapter CD from Amazon and the like. Anyways, thought I would let you all know..

Have you played it?
Just wondering what sort of game you could compare it to... looks nice though.

Not yet but I might download the first free chapter. i figured I would inform the GOG community since the game appears to contain no DRM, is an RPG, and it is open source...

Started the download now. The only mirror seems to be Fileplanet, so for those who don't know, you'll need to register an account, which is free.

I refuse to download anything from Fileplanet, so let me know how it is

I was under the impression that the further chapters were no longer available to buy. I played a bit of the first chapter, had a friend that loved the game. Isometric rpg, deep and unique - not bad at all.