Games like Spiral Knights

"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."

Phantasy Star Online 2 New Genesis, the latest chapter in the Phantasy Star Online 2 series, is here at last! It's time to jump into adventures beyond imagination! This new adventure takes place on a vast open field! Up to 32 people can enjoy the adventure in a new world with beautifully evolved graphics! The simple and intuitive controls developed in the series up to now have also evolved! A n…

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.

"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."

"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."

Explore a vast new MMORPG world inspired by your favorite pixellated dungeon crawlers. Collect and craft thousands of pieces of loot to increase your power. Build your team by capturing monsters and bosses to fight at your side in old school, turn-based combat. Prove you’re the mightiest hero in the land by competing in the PvP arena, Raids, and weekly events for awesome prizes! Take your most …

"KurtzPel is a 3rd person anime-inspired action battle game, where players can enjoy multiplayer PvP and PvE content. The matchmaking system sets up 2vs2 battles, including Deathmatch, Capture the Flag, and Conquest modes. In PvE, players can fight important enemies and uncover the KurtzPel universe's story through interactions with Hero NPCs."

AdventureQuest 3D is a free-to-play cross-platform MMORPG that allows you to explore an ever-expanding world with thousands of other players. Choose from various classes, battle monsters, complete quests, and participate in seasonal events. The game offers real-time combat, player vs. player modes, and the ability to customize and decorate your own home.

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.

"Rift" is a free-to-play, massively multiplayer fantasy role-playing game with co-op and PvP modes. Create your character from two factions, three races, and a variety of Souls, each with unique abilities and traits. The game boasts impressive graphics, engaging story, and innovative mechanics, allowing you to mix and match abilities and change character builds at any time. Every armor or costume piece you acquire can be used across all your characters, making for a customizable and unique gameplay experience.