Legacy of Kain is a series of action-adventure video games primarily developed by Crystal Dynamics and formerly published by Eidos Interactive, then Square Enix Europe after 2009. The first title, "", was created by Silicon Knights in association with Crystal Dynamics, but, after a legal battle, Crystal Dynamics retained the rights to the game's intellectual property, and continued its story with four sequels. To date, five games comprise the series, all initially developed for video game consoles and later ported to Microsoft Windows. Focusing on the eponymous character of Kain, a vampire antihero, each title features action, exploration and puzzle-solving, with some role-playing game elements.