It is not simple, I'd call it elemental. All the best elements of the 16-bit era platformer have been refined and perfected in Super Castlevania The controls are very responsive and rewarding.
Super Castlevania features a spooky Gothic environment where you will challenge Dracula, Medusa, Frankenstein, and more. Armored zombies and bats will harass you as you ascend bell towers and whip your way through swamps.
This game is easy to just pick up and play but effort and skill is rewarded. I recommend this game to everyone, not just "retro-gamers". There is something to be learned from the craftsmanship that went into composing this game as a whole.