About Star Wars: Dark Forces

war - since the protagonist is a mercenary who is mostly hired for "covert" ops, this bit is not so evident, but these are part of the Rebel Alliance's war effort against the Empire.
depth fog - only used in some levels, especially some of the outside levels to simulate thick atmosphere (or dust?).
autosave points - on mission completion, no other saves are made. Player can freely replay any level they've finished.
voice overs - besides videos and taunts from the empire's minions, there's actually some voice overs besides them, such as Kyle reporting having found something pertinent to the mission and Jan giving farther instructions (albeit all of these are rather short compared to the voice overs in videos).

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absolutearmor - melee and some other attacks bypass the shields