Ultima Underworld: The Stygian Abyss (DOS)

Ultima Underworld: The Stygian Abyss
Developer: Blue Sky Productions Publisher: Origin Systems Platform: DOS Released in US: March 1992 This game has hidden development-related text.

Ultima Underworld: The Stygian Abyss has the Avatar brought back to Britannia for the sole purpose of being falsely accused of kidnapping a girl.

It was a technical advancement by being one of the early 3D games, although the gameplay mechanics were not exactly ideal with plenty of skills being considered useless or redundant.

Underworld Editor Remnants

Hidden inside uw.exe at 0x5AF2C (version F1.50S):

Thank you, and you, may i add, for using the Underworld Editor

Fittingly, there's also a reference to uwedit.exe at 0x5DD58.

(Source: Evildrome Dragon)

Unused Text

Strings.pak compresses its strings in some huffman-type encoding. The first string in string set 1, at offset 9b6:

Hey, its all the game strings

(Source: Underworld Exporter - uw1_stringsclean.txt)