Transylvania was the name of a trilogy of computer games released for several home computers of the 1980s. The games were graphic adventure games created by Antonio Antiochia and produced by the now defunct Penguin Software.
In 1982, this game was released for the Apple II, Atari 8-bit family, Commodore 64 and Commodore 128. It was later re-released for the Apple Macintosh in 1984, then the Amiga, Atari ST and DOS in 1985. It sets the player on a quest to rescue Princess Sabrina from a countryside roamed by a werewolf, a vampire, a prankster goblin, a witch, and an alien space ship. The game has a time limit (dictated to the player by a note encountered early on that reads, "Sabrina dies at dawn"), as the Princess is trapped in a coffin in the castle tower. The game's usage of hand-drawn graphics were part of a trend where once entirely text adventure games started to use computer graphics to show the game's environment. It remains the most popular title in the trilogy.
An iPhone version of Transylvania was released on October 30th, 2009 under the name "Transylvania Adventure". The iPhone version features a touch-friendly user interface, sounds, and vintage "retro" graphics.
Source: Wikipedia, "Transylvania (computer game)", available under the CC-BY-SA License.