Ultima Underworld: The Stygian Abyss

The game's combat system is action-oriented, requiring the player to draw their weapon, aim, and hold the cursor over the screen to inflict damage. The length of time the cursor is held determines the attack strength, with different types of attacks depending on the cursor position. Players can also choose their character's class, skills, and abilities at the beginning of the game.

Skills include weapon proficiencies, lockpicking, bartering, and others, which can be increased by reciting mantras at special shrines. The magic system uses runes that can be combined to produce magical effects. Conversations with non-playable characters are possible, and players can make choices regarding the Avatar's behavior towards them.

The game features a non-linear progression, allowing players to explore most of the Abyss in any order, while completing specific tasks for the story to progress. An auto-map displays previously explored locations and allows players to note their findings.