The title is pretty generic, as almost everything is based on a true story. Some are word for word, some recreate a particular situation, some are inspired by actual events, and some limit themselves to maybe being true sometime in the future. To provide a more serious sidenote, and to recap the legalese section, Orbz 2 is free and clear; the original creator is totally chill with it, and the thing is claimed under US copyright, as noted by the little irksome box below.