59		World of WarCraft (Windows, 2004)
57		Guild Wars (Windows, 2005)
55		EverQuest II (Windows, 2004)
55		Age of Conan: Hyborian Adventures (Windows, 2008)
55		Atlantica Online (Windows, 2008)
54		Flyff: Fly For Fun (Windows, 2005)
53		Guild Wars 2 (Windows, 2012)
53		Asheron's Call 2: Fallen Kings (Windows, 2002)
53		Aion (Windows, 2009)
53		The Saga of Ryzom (Windows, 2004)
53		Dark Age of Camelot (Windows, 2001)
52		EverQuest (Windows, 1999)
51		Meridian 59 (Windows, 1996)
51		Tibia (Windows, 1997)
50		Villagers & Heroes of a Mystical Land (Windows, 2011)
50		Club Penguin Island (Windows, 2018)
50		A Chinese Ghost Story Online (Windows, 2012)
47		Warhammer Online: Age of Reckoning (Windows, 2008)
44		Pirates of the Caribbean Online (Windows, 2007)
44		Ragnarök Online (Windows, 2002)
41		Ultima Online: Renaissance (Windows, 2000)
41		Ultima Online (Windows, 1997)
41		Final Fantasy XI Online (Windows, 2002)
40		Nexus: The Kingdom of the Winds (Windows, 1998)
40		RuneScape (Windows, 2001)

Notes: Games similar to MapleStory, Games like MapleStory, Wizet, Nexon America Inc., Windows, Role-Playing, RPG, Fantasy, Fighting, Massively Multiplayer, Persistent, Side view, PC, Game Similarities.