If you liked this
Games like Tera: La Cité des Crânes
If you finished Tera: La Cité des Crânes, the closest matches are SaGa: Emerald Beyond, FOnline 2, Chaos Rings III, .hack//Link and Last Origin. All 10 share its role-playing (rpg) genre and are ranked by how closely their themes and modes overlap.
