System's Twilight: An Abstract Fairy Tale is a graphical interactive fiction computer game created by Andrew Plotkin and released in 1994.

The overarching story is an allegory in which the player and other characters are programs in a broken, dysfunctional computer environment.

MacAddict commented that System's Twilight felt similar to 3 in Three, with hard puzzles, quality sound and graphics, and a witty storyline.

"[4] AllGame rated System's Twilight three and a half out of five stars, calling it "a very unusual game" with an ending that was "something of a letdown", and suggesting that it would appeal to people who like hard puzzles.

For the AllGame reviewer, the graphics were average while the weird and amusing sounds complemented the gameplay.