Might and Magic VII - For Blood and Honour
This game was amazing for it's time, and it still is. The combination of allowing turn based combat and switching to free move combat was fantastic. as different situations called for different stategies. While the game by today's standards has rather poor graphics it is still one of the best interactive RPG's out there. I admit it had it's flaws most of which were fixed later in the series, but this one truely made you want to play with an in depth story that was easy to follow, and kept you on your toes with side quests that didnt take a genious to figure out how to complete.
You can waste hours of time playing this game, and even when your mad at it with a vengeance you'll still want to play more of it.