1. Dragon Saga

Official Link: https://www.warpportal.com/

Dragon Saga (formerly known as Dragonica) is a 3D side scrolling fantasy themed action MMORPG. Set in a world of dragons and magic, Dragon Saga takes adventurers across the windswept land of El Grego to the far reaches of the world. Gorgeous visuals complement lightning fast combat while 3D battlegrounds let you get the upper hand on opponents. Dragon Saga is the only fantasy action massively multiplayer game that merges innovative 3D side-scrolling, arcade combat, and a comical, yet devastating, skill system into a single MMO. Combining vibrant graphics and expansive player freedom, Dragon Saga breathes new life into the traditional side-scrolling MMO and is set to become one of the leading free-to-play MMOs in the industry.

2. Dungeon Fighter Online

Official Link: http://dungeonfighter.nexon.net/

Dungeon Fighter Online transports players into the mystical realm of Arad where dangerous dungeons abound. Gamers battle monsters as an individual explorer or team up to journey through exclusive multiplayer dungeons. Like other Nexon titles, the game's controls are easy to learn and can be tailored to personal preferences. Players can choose from five distinct character classes - Fighter, Gunner, Mage, Priest and Swordsman - each featuring a unique set of abilities and powerful attack combinations. Each class further specializes into four sub-classes, which opens up further skills and customization.

3. MapleStory

Official Link: http://maplestory.nexon.net/

Maplestory is a fun, 2D side-scrolling fantasy MMORPG with cartoony graphics. The game is certainly one of the most popular free-to-play MMORPGs, as it has a massive community and a lot of features. The game has a large world to explore, varied classes, unique platforming party quests, and so much more. Maplestory practically started the entire free-to-play genre, as it was really the first successful free MMORPG.

4. Mini Fighter

Official Link: http://global.netmarble.com/minifighter/

Mini Fighter is an action-filled, side-scrolling fighting game that features massively multiplayer online battles with up to 200 combatants. Players can level-up their fighters and compete in a wide variety of modes, from Grand Arena matches to Boss fights and daily Castle Sieges.

5. Wonder King

Official Link: http://dungeonfighter.nexon.net/

This 2D, side-scrolling MMORPG takes players on a wildly adventurous journey with story-by-story quests, much like a fantasy novel. Players will travel from beautiful beaches to murky marshlands and frigid snowfields as they take on the mantle of WonderKing to save the world. Designed for gamers of all ages, WonderKing's character advancement system allows players to grow into higher classes, each designed to suit different play styles.