Dungeon Master II: The Legend of Skullkeep

Dungeon Master established several new standards for role playing and computer games in general. Dungeon Master was a realtime game instead of the traditional turn-based approach that was prevalent until then. Instead of using text-based commands to interact with the environment, players directly manipulated objects and the environment by clicking the mouse in the enlarged first-person view. Abstract Dungeons and Dragons style experience points and levels were eschewed in favor of a system where the characters' skills were improved directly via using them.