Interstellar Pig, published in 1984 by Bantam Books, is a science fiction novel for young adults written by William Sleator. It was listed as an ALA Notable Book, a SLJ Best Book of the Year, and a Junior Literary Guild Selection. Plot When Zena, Manny, and Joe move into the cinder-block cottage next door, Barney is intrigued by their glamorous, exotic lifestyle. His fascination grows when Zena introduces Barney to their favorite pastime: Interstellar Pig, a board game in which the key objective is to finish the game with the Piggy card in hand. Zena quickly briefs him on the rules: each player picks their character from a box of cards depicting different aliens. Every alien race has its own strengths, weaknesses, and IRSC (Interstellar Relative Sapience Code, with lower numbers favorable). When the time runs out, every home planet will be obliterated except the one belonging to the holder of the Piggy. Barney is amazed when the neighbors keep choosing the same character cards: Joe repeatedly picks water-breathing Jrlb; Zena always chooses Zulma, an arachnoid nymph; and Manny always picks Moyna, an octopus-like gas bag. While snooping through Zena's underwear drawer, Barney finds a manuscript written by Captain Latham— the same Captain who had built the house that Barney and his parents were renting— telling of the event that caused his brother to go crazy. At sea, the Captain rescued a man floating in the ocean, described as having a "leathery, greenish, reptilian hide" due to sunburn and a "swollen contusion", "yellow and filmed with slime" on his forehead. Insisting that the man is the Devil, the Captain's brother strangles him—and in punishment, is keelhauled. Although he survives, his mind is damaged due to the oxygen deprivation, and he spends the rest of his life locked in his room (which later became Barney's bedroom), scratching patterns into the wooden walls and clinging to the strange trinket he had taken from the murdered man's corpse. That night Barney begins to see a pattern in the marks the Captain's brother had scratched into the window of his bedroom: all the scratches centered on a particular rock on a nearby island. Remembering the trinket "to which [the brother] clung as he was pulled from the water, to which he still clings", Barney decides to go out to the boulder and see if the trinket had been hidden there. He finds a small,