The "Final Fantasy" series is notable for featuring minigames in every entry of the series, ever since the first "Final Fantasy" (1987), in which a sliding puzzle in the form of an Easter egg can be unlocked while boarding the ship. Considered to be the first RPG minigame, it was added into the game by programmer Nasir Gebelli despite it not being part of Squaresoft's original game design. In "Final Fantasy II" (1988), a matching game can be unlocked while boarding the ice sled and meeting a certain requirement. Later in the series, "Final Fantasy VII" (1997) was the first video game to include within it at least thirty minigames, which remains the largest number of minigames for a role-playing game. The PC game "Chronomaster" featured similar puzzle minigames which were crucial to the plot.