RF Online

RF Online, which stands for "Rising Force Online", is a Korean MMORPG developed by CCR and published by Sega in Japan and Codemasters in the United States and Europe. It is a mix of fantasy and science fiction elements and is based on a three-way race-versus-race (RvRvR) system, in which the game's three races compete in massive player-versus-player (PvP) battles called Chip Wars. Originally, RF Online was subscription-based. However, in October 2007, RF Online became a free-to-play game, with the addition of an online cash store where real money can be spent on in-game items.