Moonlight Online is a free to play, fantasy MMORPG developed by IGG, covering the popular theme of vampires and werewolves.

These, along with humans, are the three playable races, each with three of four classes to choose from: Knight, Mage, Sage and Rogue. Although each race has different advantages over the others, they are balanced to ensure that no one race will dominate any other. The humans posses great defensive properties while the vampires posses speed and werewolves are granted huge strength when they turn.