Games like MapleStory

"Vindictus is a historical hack and slash massively multiplayer online game, where up to 2 players can play together in co-op mode or single-player. The game features brutal combat with complex and fast-paced system, allowing players to utilize combos, magic and environment to defeat enemies. Choose from 16 distinct characters, each with unique skills, armor and personality."

Tree of Savior is a Korean MMORPG game.

Trove is a fantasy massively multiplayer online game that offers both single-player and multi-player experiences, including co-op and PvP modes. Explore open worlds filled with player-created realms and dungeons, while mastering the abilities of various cubular classes, such as knights, gunslingers, and ice sages. The game also features a battle royale mode called Bomber Royale, where up to 20 players compete to be the last one standing.

"Aura Kingdom is a historically-inspired, anime-styled MMORPG with a massive open world and diverse customization options. Players can choose from ten classes, each with unique skills, and are joined by powerful Eidolons. Questing and combat against monsters with varying skills make up the majority of the game, with the option to play solo or in a party."

"Riders of Icarus" is a free-to-play MMORPG that allows players to capture and train mounts for combat and exploration in a vast fantasy world. The game features both PvE and PvP modes, with a heavy emphasis on aerial combat and epic boss battles. Players can choose from various classes, each with unique abilities and playstyles, as they uncover the mysteries of the world of Icarus.

Dragon Saga is a free to play arcade style side scrolling 3D Fantasy MMORPG set in a world of Dragons and magic. Choose one of six classes (Warrior, Mage, Thief, Archer, Shaman, and Twin Fighter) and explore a rich world filled with unique monsters. Power up to unlock devastating abilities, hidden combos and hilarious skill effects.

"Dungeon Fighter Online is a 2D side-scrolling action MORPG with fast-paced gameplay and unique retro-style graphics, inspired by classic arcade games. Experience dazzling hit effects and complex combos, and customize your character with various avatars and dyes. Join the adventure and become the hero of an epic story with a variety of characters!"

Black Desert is a historical open-world MMORPG that offers a rich and immersive gaming experience with its remastered graphics and audio. Test your limits in thrilling combat, exploration, trading, and life skills such as fishing, alchemy, cooking, and gathering in its vast game world. Play solo or join forces with up to 2 other players for co-op adventures in this massively multiplayer game. Enhance your gameplay with various characters, classes, and advanced customization features.

MU Legend is a top down MMORPG from Webzen and the sequel to 2003's MU Online.

The Continent of the Ninth Seal (C9) is an action MORPG. Players take part in the game as heroes of Glenheim to stand against Nefer, an evil villain trying to open a gate to the Netherworld and swarm the land with his infernal legion. C9 showcases quality visuals, strategic combat, and a gripping story. Choose a character that best represents how you want to experience the game. The four base clas…