The first game in the series, Castlevania introduced the vampire killer Simon Belmont of the famed House of Belmont and his nemesis, Count Dracula. It also established the series' reputation for providing killer bosses: Frankenstein, Mummy, and Grim Reaper are some of the enemies you'll face.
Castlevania features simple yet addictive gameplay. The controls are excellent and simple: One button for jumps, the other for attacks. Ah, the glorious days of 8-bit: Tinny mono sound and no multi-scrolling!