Gravity Co., Ltd. develops, publishes, and distributes online games mainly in South Korea, Taiwan, Thailand, the Philippines, and internationally. It offers a massively multiplayer online role-playing game, including Ragnarok Online, Requiem, Dragonica, Ragnarok Online II, and Ragnarok Prequel II, as well as Ragnarok Clicker, a Web browser-based role-playing game. The company's mobile games portfolio includes Ragnarok M: Eternal Love Ragnarok Origin Ragnarok X: Next Generation Sacred Blade Dark Eden the Labyrinth of Ragnarok Ragnarok Poring Merge Action RO2: Spear of Odin Tera Classic the Lord and the Color of Dream Fantasy, Latale. It also provides console games, such as Ragnarok DS for Nintendo DS Ragnarok: The Princess of Light and Darkness for PlayStation Portable Ragnarok Odyssey for PlayStation Vita Double Dragon II for Xbox 360 and Ragnarok Odyssey Ace for PlayStation Vita and PlayStation 3. In addition, the company offers games for IPTV, including Pororo: The Little Penguin and markets dolls, stationery, food, and other character-based merchandises, as well as game manuals, monthly magazines, and other publications. Further, it provides system development and maintenance services, as well as system integration services to third parties. As of December 31, 2020, it owned 129 registered domain names. The company was incorporated in 2000 and is headquartered in Seoul, South Korea. Gravity Co., Ltd. is a subsidiary of GungHo Online Entertainment, Inc.