 There are some indirect but obvious references to other adventure  games, all of which happen to be from LucasArts. 1.: April has a toy  monkey called "Guybrush"  (_Secret of Monkey Island, The (1990) (VG)_ (qv) and its sequels).  2. and 3.: There is a crossing of two streets in Newport which are  named after two LucasArts protagonists: "Calavera Crossing" (Manny  Calavera from _Grim Fandango (1998) (VG)_ (qv)) and "Threadbare  Lane" (Bobbin Threadbare from _Loom (1990) (VG)_ (qv)). Also  Cortezs, one of the main characters, real name is Manny, like Manny  Calavera from Grim Fandango. His accent is also a reference to that  game...