Clan MacGaming: System's Twilight Review: "System's Twilight is completely worth the download... that is, if you think you're a genius." By Samuel Marcus.
IF-Review: The Tale of the Reviewer: Review with spoilers by Gunther Schmidl.
Zarfhome: System's Twilight: Author's page about the Macintosh puzzle game in the style of 3 in Three and The Fool's Errand.