Gravity Co., Ltd. develops and publishes online and mobile games worldwide. Its portfolio includes MMORPGs such as Ragnarok Online, Dragonica, Requiem Online, R.O.S.E. Online, Ragnarok Online II, and Ragnarok Landverse, along with character-based merchandise and animation. The company also offers mobile games, console games, IPTV games, PC games, social network games, and web-browser-based games, as well as system development, maintenance, and integration services. Incorporated in 2000 and headquartered in Seoul, South Korea, Gravity Co., Ltd. is a subsidiary of GungHo Online Entertainment, Inc.