Castlevania

Castlevania uses platform gameplay and is divided into six blocks of three stages each, for a total of 18 stages. Simon can move, jump, crouch, climb stairs and use a magic whip (known in the series as the "Vampire Killer") as his primary combat weapon. When the player presses the button to crack the whip, there is a short delay before Simon actually does so.^[9] The player begins the game with four lives and five hearts, and must complete the current block of stages before a timer runs out. Simon has a health meter, which decreases whenever he is hit by an enemy or projectile. One life is lost if either the meter or the timer reaches zero, or if Simon falls off the bottom of the screen or is hit by a moving spiked ceiling. Hidden food items restore health, and bonus lives are earned at certain score thresholds. The player fights a boss character, usually themed after a classic horror movie monster such as Frankenstein's monster or the Grim Reaper, at the end of each block, and must win the battle and pick up a red orb that restores all health before time runs out in order to advance. The ultimate goal is to defeat Count Dracula himself and the Curse of Man at the end of Stage 18, triggering the collapse of Dracula's castle and allowing the player to restart the game at an increased difficulty.

Throughout the game, the player can find and use various backup weapons, including throwing knives, axes, vials of holy water, a magical watch that can briefly freeze enemies, and sacred crosses that function as boomerangs. However, only one such weapon can be carried at a time; if the player picks up a new one or loses a life, the weapon is automatically lost. Backup weapons require hearts for their use, which can be found by extinguishing candles or defeating enemies with the whip. Other hidden items include point bonuses (sacks of money), temporary invincibility (golden jar), upgrades to the whip's length and power (metal chain), instant destruction of all on-screen enemies (blue rosary) and double to triple use of the backup weapon.

When all lives are lost, the player has the option to continue from the start of the block or return to the title screen.