Games like Abyssal Guardians
Games like Abyssal Guardians include Lethal Company, Deep Rock Galactic, Left 4 Dead 2, R.E.P.O., and PUBG: BATTLEGROUNDS. We matched them by the tags players give Abyssal Guardians on Steam (Exploration, Shooter, Survival, First-Person, and Horror): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Co-op · First-Person · Horror

Deep Rock Galactic
Shared: Co-op · Shooter · Exploration

Left 4 Dead 2
Shared: Co-op · Shooter · Survival

R.E.P.O.
Shared: Co-op · Horror · First-Person

PUBG: BATTLEGROUNDS
Shared: Shooter · Survival · Co-op

Content Warning
Shared: Exploration · Horror · Procedural Generation

Subnautica 2
Shared: Survival · Exploration · Co-op

Left 4 Dead
Shared: Co-op · Shooter · Horror

PEAK
Shared: Co-op · Exploration · First-Person

Borderlands 2
Shared: Shooter · Co-op · First-Person

Sons Of The Forest
Shared: Co-op · Survival · Horror

The Forest
Shared: Survival · Horror · First-Person

Killing Floor
Shared: Co-op · Survival · Horror

Far Cry® 5
Shared: Co-op · Shooter · Exploration

Blood and Bacon
Shared: Shooter · Co-op · Horror

No Man's Sky
Shared: Exploration · Survival · Procedural Generation

Ready or Not
Shared: Shooter · Co-op · Horror

Apex Legends™
Shared: Shooter · First-Person · Co-op

Pacify
Shared: Co-op · Horror · Exploration

Back 4 Blood
Shared: Co-op · Shooter · Horror

Killing Floor 3
Shared: Co-op · Shooter · First-Person

Serious Sam II
Shared: Co-op · Shooter · First-Person

Dying Light
Shared: Horror · First-Person · Survival

No More Room in Hell 2
Shared: Co-op · Survival · First-Person