Castlevania is easily the hardest game I've ever played. From the crazy four hit death first boss battle, and the massive hordes of the undead coming at you, Castlevania kicks your butt. In a good way. The more you played, the farther you wanted to get, and the farther you got, the more fun and challenging it became. The platforming added a level of brilliance to the game, as it relied on multi-leveled climbing and fighting with the ingenious use of stairs. The graphics back then were the best on the NES, and the combat was responsive, and each hit felt powerful. Castlevania definitely deserves a spot on my list.
