A Korean MMORPG based on the manhwa Ragnarok by Myung-Jin Lee, released in 2002 by Gravity Co., Ltd, using the engine from their previous game Arcturus. Its popularity spawned the anime Ragnarok the Animation, which was based on the game. Due to numerous hacks that leaked the source code during the beta years of the game, most western players are on semi-legal emulated private servers.
PC 1. Ragnarok Online 2. Ragnarok Online 2 a. Legend of the Second b. Gate of the World 3. Ragnarok TCG 4. Ragnarok Crusade Midgard Chronicles 5. Ragnarok Guild Masters 6. Ragnarok Online Prequel AKA Ragnarok Online Web AKA Ragnarok Journey AKA Ragnarok Zero
PC and Mobile 1. Urachacha Go Ragnarok 2. Urachacha Go Ragnarok 2
Mobile 1. Ragnarok Masters (JP) AKA Ragnarok M Eternal Love AKA Ragnarok M Eternal Guardians of Love 2. Ragnarok Origin (KR) AKA Ragnarok M Love at First Sight (CN) 3. Ragnarok X Next Generation AKA Ragnarok X New Start AKA Ragnarok M Birth of The New Generation 4. Ragnarok Online Valkyrie Uprising AKA Ragnarok Path of Heroes AKA Ragnarok Valkyrie Rebellion AKA Ragnarok War of Gods AKA Ragnarok Classic MMORPG AKA Ragnarok Battle of Heroes 5. RO Idle Poring AKA Smack Poring 6. Ragnarok Violet, followed by Ragnarok Scarlet 7. Ragnarok Tactics, not to be confused with Ragnarok Hikari to Yami no Kouji 8. Ragnarok Angel Poring 9. Ragnarok Renaissance 10. Ragnarok Battle Academy 11. Ragnarok Clicker replaced by Ragnarok Click H5 12. Ragnarok Mobile (With versions for each of the six jobs) 13. Ragnarok Nostalgia 14. Ragnarok Ash Vacuum 15. Ragnarok Spear of Odin 16. Ragnarok Crush 17. Ragnarok Monster Farm 18. Ragnarok Poring Pop 19. The Lost Memories Song of Valkyrie
Comics and Anime 1. Ragnarok (manhwa) 2. Ragnarok the Animation 3. Requiem for the Lost
Console: 1. Ragnarok Hikari to Yami no Kouji (JP) AKA Ragnarok Tactics 2. Ragnarok Online DS 3. Ragnarok Odyssey
