Added: The Great Stygian Abyss (1st Floor) for Unreal
Another excellent Unreal map created by Ryan “Zerker” Armstrong, this project is a re-creation of “the entire first floor of Ultima Underworld for Unreal.” The level fully supports all of Unreal‘s default gaming modes, including co-operative play and botmatches.
Naturally, the maps also require Unreal to play. Copies of the game for [amazonify]B00004KHDP::text::::Windows[/amazonify] and [amazonify]B000069KCN::text::::Mac[/amazonify] can still be found online, though they won’t necessarily be cheap or in stock in large quantities. You can also find the game for direct download on Steam or Impulse/Stardock. (If you want to support Aiera a little bit, buy it through Stardock.) You can also get it at GOG (of course!).