YMMV / User Unfriendly

• Fridge Brilliance: There are numerous clues that Wolstan is a werewolf.
  • His name.
  • His wearing a wolfskin vest.
  • His running with a pack of wolves, though the players assume he's running away from them.
  • His mourning the death of "my brothers," which the players think are the dead men they found by the road, but which are actually the wolves themselves.
  • His spitting up blood, which the players think comes from injury, but which actually comes from his feasting on human flesh.
  • His having blood on his arms, which he claims is from wounds which the players never see.
  • His repeated encouragement for the group to camp in the woods—an attempt to lure them into a spot where the wolves can attack.
  • His immediately biting into a fish they just caught without waiting for them to cook or clean it.
  • His claiming he's going to catch some wild animals for them even though he's carrying no bow and arrow.
  • His appearing to have red eyes in the nocturnal light.
• Fridge Horror: Arvin will have to live with the knowledge that if any number of things had not turned out exactly right during the game—some due to luck, some due to quick-thinking on his or other players' part—his mother would probably have died.
• Technology Marches On: First published in 1991, the book features futuristic technology that isn’t even close to existing today, yet the computer still uses a telephone modem. The two sequels, despite taking place at roughly the same time as the first book, don't repeat that mistake, probably because they came out much later (2002 and 2012 respectively) after dial-up had been largely supplanted by broadband in the United States.