Games like Champions of Regnum

"Fallen Earth" is a post-apocalyptic MMORPG set in a ruined world, where you must survive as a clone with an unknown past. Explore the Grand Canyon's 1,000 square kilometers of harsh terrain, engage in classless advancement and non-linear gameplay. Participate in dynamic events, factional alliances, crafting, and PvP combat, with the freedom to play the character you want in a world of destruction and betrayal.

"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.

Villagers and Heroes is a free-to-play MMO game in which players experience the thrill of battling unique monsters, the satisfaction of crafting powerful weapons and gear, and the pleasure of building lasting friendships in a friendly community.

"Mortal Online" is a first-person, open-world sandbox fantasy MMORPG that offers a high level of freedom and player-versus-player combat. With minimal hand-holding, players are tasked with surviving in a dangerous world filled with powerful monsters, political intrigue, and other players who may be friend or foe. Skill-based progression and a player-driven economy make this a challenging and engaging experience for dedicated MMORPG fans.

"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."

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.

Defiance is a massively multiplayer science fiction shooter game with good story and graphics, offering both co-op and competitive gameplay. Scavenge for alien technology on a transformed Earth, equip powerful weapons, and engage in epic battles while leveling up and forming alliances. Despite some bugs and grinding, Defiance delivers a unique and often humorous, action-packed experience.

"Wakfu is a massively multiplayer, turn-based strategy game set in the World of Twelve. Engage in action-packed, tactical battles with 18 unique classes, and choose your path as a warrior, politician, merchant, or craftsman. With a humor-filled universe and a player-driven economy, Wakfu offers a limitless and dynamic adventure."

Tree of Savior is a Korean MMORPG game.