Transylvania is the first chapter of a series of horror graphic adventure games created by Antonio Antiochia and published by Penguin Software. This first game was released in 1982 for the Apple II, Atari 8-bit, and Commodore 64. The Amiga and Atari ST versions, published in 1986, added special double Hi-Res 16-colour graphics, plus new locations and puzzles. Recently, the game was also ported to the iPhone.
GamesNostalgia offers you the Atari ST version.