Games like Karos
Games like Karos include Neverwinter, The Elder Scrolls Online - Standard Edition, Destiny 2, Where Winds Meet, and Albion Online. We matched them by the tags players give Karos on Steam (Free to Play, RPG, Massively Multiplayer, MMORPG, and Open World): closest matches first, and among equally close ones the better-known games.

Neverwinter
Shared: Free to Play · RPG · MMORPG

The Elder Scrolls Online - Standard Edition
Shared: RPG · MMORPG · Open World

Destiny 2
Shared: Free to Play · Open World · MMORPG

Where Winds Meet
Shared: Free to Play · Open World · Multiplayer

Albion Online
Shared: Free to Play · MMORPG · Massively Multiplayer

Blue Protocol: Star Resonance
Shared: Free to Play · MMORPG · RPG

Star Trek Online
Shared: Free to Play · Massively Multiplayer · RPG

Once Human
Shared: Free to Play · Open World · Multiplayer

FINAL FANTASY XIV Online
Shared: RPG · MMORPG · Massively Multiplayer

Guild Wars 2®
Shared: Free to Play · MMORPG · RPG

Trove
Shared: Free to Play · MMORPG · Open World

Monster Hunter: World
Shared: RPG · Open World · Action

Warframe
Shared: Free to Play · RPG · Action

Path of Exile
Shared: Free to Play · MMORPG · Action RPG

Delta Force
Shared: Free to Play · Massively Multiplayer · Multiplayer

Dragon's Dogma 2
Shared: RPG · Open World · Action

Marvel Rivals
Shared: Free to Play · Multiplayer · Action

STALZONE
Shared: Free to Play · MMORPG · Open World

ELDEN RING
Shared: RPG · Open World · Multiplayer

Middle-earth: Shadow of War
Shared: RPG · Open World · Action

Wuthering Waves
Shared: Free to Play · Open World · RPG

Halo Infinite
Shared: Free to Play · Multiplayer · Action

SMITE®
Shared: Free to Play · Action · Multiplayer

Phantasy Star Online 2 New Genesis
Shared: Free to Play · Open World · MMORPG