read to fast. actually its worse the paragraph before makes it more clear that it is not free software. "As the author and copyright holder of this source code, I personally have no problem with anyone studying it, modifying it, attempting to run it, etc. Please understand that this does NOT constitute a grant of rights of any kind in Prince of Persia, which is an ongoing Ubisoft game franchise. Ubisoft alone has the right to make and distribute Prince of Persia games."

Although the source is available I see no licensing information. The closest it comes is ". In the meantime, if you have questions -- technical, legal, or otherwise -- I recommend that you direct them to the community at large, whose collective knowledge and expertise far exceeds mine, and will only increase as more people get their eyes on this code." So the source may be available but not free software or open source.