Gravity Co., Ltd. develops and publishes online and mobile games worldwide. It offers massively multiplayer online role-playing games, including Ragnarok Online, Dragonica, Requiem Online, R.O.S.E. Online, Ragnarok Online II, and Ragnarok Landverse, as well as character-based merchandise and animation. Its mobile games portfolio includes Ragnarok M; Eternal Love; Ragnarok Origin; Ragnarok X: Next Generation; Ragnarok Arena; WITH ISLAND; the Labyrinth of Ragnarok; Ragnarok Poring; Tera Classic; NBA: Rise To Stardom; Generation Zombie; Ragnarok Idle Adventure; Ragnarok 20 Heroes; White Chord; WITH: Whale In The High; Ragnarok Lost Memories; and Paladog Tactics. 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; Ragnarok Odyssey Ace for PlayStation Vita and PlayStation 3; Pigromance for Steam, Stove, Nintendo Switch, Xbox One, Xbox Series X|S; ALTF4 11 for Steam and Stove; Wetory for Steam, Stove, Nintedo Switch; and GRANDIA HD Collection for Nintendo Switch. In addition, it offers games for IPTV, including Haunted House and Pororo: The Little Penguin, and Kongsuni; and markets dolls, stationery, food, and other character-based merchandise, as well as game manuals, monthly magazines, and other publications; PC games, including Puzzle, Platformer, ALTF4 II, Ragnarok ZERO, KAMiBAKO-Mythology of Cube, Psychodemic, and FINAL KNIGHT; social network games and mobile games, such as Ragnarok V: Returns, Ragnarok: The Lost Memories and Ragnrok Begins in-house; and web-browser-based games, such as Ragnarok Prequel and Ragnarok Prequel II. Further, the company provides system development and maintenance services, as well as system integration services to third parties. The company was incorporated in 2000 and is headquartered in Seoul, South Korea. Gravity Co., Ltd. is a subsidiary of GungHo Online Entertainment, Inc.