astlevania is the first game in the long running series of the same title. It is available for a variety of platforms. It was first released on the Famicom Disk System as Akumajo Dracula on September 26th, 1986. North America was introduced to this game on May 1st, 1987 on the Nintendo Entertainment System.
Interestingly, this is not the first Akumajo Dracula (Castlevania) game to Europeans. The European audience received Vampire Killer for the MSX2 Home Computer in October of 1986. Castlevania did not reach European shores until December 19th, 1988.
In 1990, Castlevania arrived for the Commodore 64 and Commodore Amiga platforms, developed by Unlimited Software and Novotrade. It saw a release in DOS format, as well. In 2004 Castlevania was made available for cellular phones and developed by Upstart Games. It reappeared on the Gameboy Advance under the Classic NES series line during the same year.
Though Vampire Killer, Haunted Castle, Super Castlevania IV, Akumajo Dracula X68000, and Castlevania Chronicles are sometimes held as "remakes" of Castlevania, they are in truth retellings of the same story. They each bear likenesses to the original, but are distinctly unique installments due to including completely different stages, enemies, music, and game play mechanics.