Kwirk, known in Japan as Puzzle Boy (??????, Pazurub?i), is an action/transport puzzle video game first developed and published by Atlus in Japan on November 24, 1989 for the original Game Boy. The game was later published in North America in March 1990 by Acclaim Entertainment. On February 22, 1991, Atlus ported and released Puzzle Boy to the PC Engine/TurboGrafx-16 exclusively in Japan.