In Diablo, There's Some server but only 10,000 or something. But in MU, they can create their own servers and play servers like Muaway, devilzmu,... Blah blah blah. Diablo Is Pay to win and MU Online they can pay to win and free to play.
Black Desert Online - This Korean developed MMORPG offers a dynamic, action-based combat system in a richly developed fantasy setting.
Stella Glow - Stella Glow is an Action, Role-Playing, Turn- based, Tactical and Single-player video game developed by Imageepoch and published by Sega.
World of Warcraft - A companion app for the popular massively multiplayer online game, the World of Warcraft App allows subscribers to manage their class hall missions while on the go. Read more about World of Warcraft.
Digimon Story: Cyber Sleuth - Digimon Story: Cyber Sleuth is an Action, Role playing, Open-world, Exploration and Single-player video game developed by Media Vision and published by Bandai Namco Entertainment.
Path of Exile - Path of Exile is a free to play online action roleplaying game that draws clear inspiration from Diablo but charts a path all its own.
Nights of Azure - Nights of Azure is an Action, RPG, Fighting and Single-player video game developed by Gust and published by Koei Tecmo.