Might and Magic, first released in 1986 for the Apple II and later receiving ports to many other systems, is the first installment in the series that would later evolve into a whole fictional universe. This universe encompasses both the actual Might and Magic games and a multitude of other subseries and spin-offs made in their own genres, including King's Bounty, Heroes of Might & Magic, and others.
Normally, this game is rather long. This movie by TaoTao skips most of it by using a glitch that allows the player to get all the important items in a matter of minutes. It is also an improvement of 2 minutes and 18.91 seconds, thanks to abusing a glitch allowing one to ignore the Soul Maze and related events as well as better optimisation.
Watch this run being played back on a real console.