Games like Project Nekrios
Games like Project Nekrios include HELLDIVERS™ 2, Deep Rock Galactic, The Callisto Protocol™, Left 4 Dead 2, and Lethal Company. We matched them by the tags players give Project Nekrios on Steam (PvE, Action, Shooter, Party Game, and 3D): closest matches first, and among equally close ones the better-known games.

HELLDIVERS™ 2
Shared: PvE · Shooter · Action

Deep Rock Galactic
Shared: PvE · Shooter · First-Person

The Callisto Protocol™
Shared: Horror · Shooter · PvE

Left 4 Dead 2
Shared: Shooter · Action · Zombies

Lethal Company
Shared: First-Person · Horror · PvE

Killing Floor 3
Shared: PvE · Shooter · First-Person

Black Mesa
Shared: Action · Shooter · First-Person

Starship Troopers: Extermination
Shared: Action · First-Person · PvE

Half-Life 2
Shared: Action · Shooter · Sci-fi

DOOM
Shared: Action · Shooter · First-Person

The Outlast Trials
Shared: PvE · Horror · First-Person

Call of Duty®: Black Ops III
Shared: Shooter · Action · First-Person

Back 4 Blood
Shared: Shooter · Action · Zombies

Dying Light
Shared: Horror · First-Person · Action

Jump Space
Shared: PvE · Action · First-Person

GoreBox
Shared: PvE · Shooter · First-Person

DOOM 3
Shared: Action · Shooter · Horror

Dead Space (2008)
Shared: Action · Horror · Sci-fi

Species: Unknown
Shared: Horror · First-Person · PvE

Resident Evil Requiem
Shared: Action · Horror · First-Person

BioShock Infinite
Shared: Action · Shooter · First-Person

Half-Life: Alyx
Shared: Shooter · Horror · Action

Deadzone: Rogue
Shared: PvE · Shooter · First-Person

Ready or Not
Shared: Shooter · Action · Horror