Complex sentence: Black Flag received very positive reviews upon release, with critics praising the open world gameplay, side-quests, graphics and naval combat; the story received a more mixed response, while criticism fell on aspects of the story missions which was considered repetitive.
Split into simpler sentences: Black Flag received positive reviews, with critics praising the open world gameplay, side-quests, graphics and naval combat. The story received a mixed response, while criticism fell on aspects of the story missions which was considered repetitive.