Games like Duet Night Abyss
Games like Duet Night Abyss include Warframe, The First Descendant, Wuthering Waves, Honkai Impact 3rd, and Snowbreak: Containment Zone. We matched them by the tags players give Duet Night Abyss on Steam (RPG, Anime, Exploration, Free to Play, and Looter Shooter): closest matches first, and among equally close ones the better-known games.

Warframe
Shared: Free to Play · Looter Shooter · RPG

The First Descendant
Shared: Free to Play · Looter Shooter · RPG

Wuthering Waves
Shared: Anime · Free to Play · RPG

Honkai Impact 3rd
Shared: Anime · RPG · Free to Play

Snowbreak: Containment Zone
Shared: Anime · Free to Play · RPG

NTE: Neverness to Everness
Shared: Anime · RPG · Free to Play

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

Granblue Fantasy: Relink
Shared: Anime · Hack and Slash · Action RPG

Zenless Zone Zero
Shared: Anime · Free to Play · Action

Marvel Rivals
Shared: Free to Play · Third-Person Shooter · Action

Black Myth: Wukong
Shared: RPG · Action · Action RPG

Path of Exile
Shared: Free to Play · Hack and Slash · Action RPG

OUTRIDERS
Shared: RPG · Looter Shooter · Action

God of War
Shared: Action · RPG · Hack and Slash

Tom Clancy’s The Division™
Shared: Looter Shooter · RPG · Action

Solo Leveling: ARISE OVERDRIVE
Shared: Anime · Action · RPG

Strinova
Shared: Anime · Free to Play · Third-Person Shooter

Monster Hunter: World
Shared: RPG · Action · Exploration

Tales of ARISE
Shared: Anime · RPG · Action RPG

Sword Art Online: Fatal Bullet
Shared: RPG · Anime · Action

DragonSword : Awakening
Shared: Anime · RPG · Action

Fallout 4
Shared: RPG · Exploration · Shooter

Gothic 1 Remake
Shared: RPG · Exploration · Action

DRAGON BALL Z: KAKAROT
Shared: RPG · Anime · Action