|
Mostly because creating the world / story is one of the more interesting aspects of game design, so game developers are unlikely to outsource it.
One does get series though, like Star Wars and Star Trek making the cross-over.
That said, it would make for much better stories / worlds --- in particular, C.J. Cherryh's Morgaine stories seem custom-made for a role-playing game w/ multiple instances.
William
|