"Might and Magic V: Darkside of Xeen is a science fantasy computer role-playing game, published and developed for multiple platforms by New World Computing in 1993. Based on the Might and Magic III: Isles of Terra game engine, it is the fifth game in the Might and Magic series, and is a direct sequel to Might and Magic IV: Clouds of Xeen, concluding the story arc started in the original Might and Magic: Secret of the Inner Sanctum.
MM5 uses a game engine based on that used by Might and Magic III: Isles of Terra. General gameplay is very similar. Because it is designed to be played alongside MM4, with characters that have obtained some levels and other enhancements through play in Clouds of Xeen, gameplay is considerably more challenging for starting characters in MM5."
Source: Wikipedia, "Might_and_Magic_V:_Darkside_of_Xeen," available under the CC-BY-SA License.