Games like Abyss
Games like Abyss include The Elder Scrolls Online - Standard Edition, FINAL FANTASY XIV Online, Black Desert, The Witcher 3: Wild Hunt — Remastered, and Mortal Online 2. We matched them by the tags players give Abyss on Steam (Casual, MMORPG, RPG, Open World, and Story Rich): closest matches first, and among equally close ones the better-known games.

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

FINAL FANTASY XIV Online
Shared: MMORPG · RPG · Character Customization

Black Desert
Shared: MMORPG · Sandbox · Exploration

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Open World · Story Rich

Mortal Online 2
Shared: MMORPG · Open World · RPG

Pax Dei
Shared: MMORPG · Open World · Sandbox

Albion Online
Shared: MMORPG · Open World · RPG

Hogwarts Legacy
Shared: Open World · RPG · Exploration

Trove
Shared: MMORPG · Open World · Sandbox

Neverwinter
Shared: MMORPG · RPG · Open World

Fallout: New Vegas
Shared: RPG · Open World · Story Rich

Fallout 4
Shared: Open World · RPG · Exploration

Crimson Desert Enhanced
Shared: Open World · Exploration · RPG

The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Open World · Exploration

Mount & Blade II: Bannerlord
Shared: RPG · Open World · Sandbox

The Quinfall
Shared: MMORPG · Open World · RPG

The Elder Scrolls IV: Oblivion® Game of the Year Edition (2009)
Shared: RPG · Open World · Exploration

Tainted Grail: The Fall of Avalon
Shared: RPG · Open World · Exploration

Where Winds Meet
Shared: Open World · Character Customization · Casual

Dune: Awakening
Shared: Story Rich · Exploration · Sandbox

Gloria Victis: Medieval MMORPG
Shared: MMORPG · Open World · RPG

Monster Hunter: World
Shared: Open World · RPG · Character Customization

Cyberpunk 2077
Shared: Open World · RPG · Story Rich

Pantheon: Rise of the Fallen
Shared: MMORPG · RPG · Open World