Complex sentence: The core bundle included "Psychonauts" (including two soundtracks), "Costume Quest", and "Stacking"; those paying more than the average would also receive "Brutal Legand" and its original soundtrack.
Split into simpler sentences: The core bundle included "Psychonauts" (including two soundtracks), "Costume Quest", and "Stacking". Those paying more than the average would also receive "Brütal Legend" and its original soundtrack.