Games like Underlight

"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.

Nin Online is a ninja-themed MMORPG inspired by classic 2000s anime and old-school MMORPGs, offering a hardcore experience with open world PvP. Players can join one of three villages or become a rogue ninja, engaging in both safe zones for training and war zones for intense PvP battles. The game features deep character customization, clan systems, and a focus on skill-based progression without pay-to-win mechanics.

EverQuest II is a free-to-play MMORPG with deep gameplay and a thriving community, now spanning 18 years and 19 expansions. Featuring 125 levels, countless quests, diverse environments, and extensive character development options, it offers a rich fantasy world to explore with support for various play styles including solo, group, raid, and PVP. Enjoy an independently leveled tradeskill system, robust housing, and a myriad of creatures to battle.

Ryzom, also known as The Saga of Ryzom, is a free and open source massively multiplayer online role-playing game developed by Nevrax for Microsoft Windows, OS X, and Linux.

Orake is a new 2D MMORPG, In Orake you can party up with your friends or make a clan. You can play capture the flag, engage in clan fights, boss fights, explore caves, and much more!

"Legends of Aria" is a sandbox-style MMORPG that offers a player-driven economy and dynamic world. Players can create their own adventures, choose from various skills and abilities, and interact with others in a persistent online world. The game features a classless system, allowing players to customize their characters to fit their playstyle. However, be aware that the game has faced criticism for its performance and buggy nature.

"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."

Project: Gorgon is a 3D fantasy MMORPG that offers a rich, immersive world with open-ended gameplay. Experience unique mechanics such as muscle fatigue, animal transformations, and a deep crafting system. With a variety of races, classes, and skills to choose from, players have the freedom to shape their character as they see fit. Discover the secrets of the island of Gorgon and carve out your own story.

Verdict is a massively multiplayer role-playing game focused on collaborative writing and immersive roleplay. Players shape their character's story through exploration, crafting, and tactical spell-based combat with over 200 unique spells. Time progresses dynamically, encouraging players to build and maintain their legacy in a living, evolving world.

Wurm Online is a totally unique, highly accessible online wilderness MMORPG that will drag you in, shake you up and down, bite you, annoy you, drive you completely mad and leave you wondering why you didn’t find it a million years ago! Both PvP and PvE server clusters are available. On the Freedom PvE cluster, you can enjoy a peaceful life being eaten by bears in the woods. One of those servers…