Hello.
Both are German products. <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />
From the look, both are entirely different. And from a gamweplay point of view, too.
Whereas Sacred is more Action-oriented, Gothic offers a deeper story with a lot of interaction. If you don't like hack & slash (H/S) but instead prefera deep story, then you should consider Gothic (compared to Sacred).
If you use the Search Function of this Forum, you might find more information / discussions about both.
Alrik.
P.S.:
Next RPG ?