Games like Death in the Water
Games like Death in the Water include Left 4 Dead 2, Dead by Daylight, Barotrauma, Feed and Grow: Fish, and Depth. We matched them by the tags players give Death in the Water on Steam (Underwater, Action, Indie, Simulation, and Gore): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: Action · Multiplayer · FPS

Dead by Daylight
Shared: Gore · Multiplayer · Horror

Barotrauma
Shared: Survival · Multiplayer · Underwater

Feed and Grow: Fish
Shared: Underwater · Simulation · Action

Depth
Shared: Underwater · Multiplayer · Gore

Killing Floor
Shared: Action · Survival · FPS

DOOM Eternal
Shared: Action · Gore · FPS

Buckshot Roulette
Shared: Multiplayer · Indie · Horror

Subnautica: Below Zero
Shared: Underwater · Survival · Horror

DOOM
Shared: Action · Gore · FPS

Blood and Bacon
Shared: Gore · Action · Multiplayer

Back 4 Blood
Shared: Gore · Multiplayer · Action

Subnautica 2
Shared: Underwater · Survival · Multiplayer

PUBG: BATTLEGROUNDS
Shared: Survival · Action · Multiplayer

Outlast
Shared: Horror · Gore · Survival

KovaaK's
Shared: Action · Simulation · Indie

Chivalry: Medieval Warfare
Shared: Action · Gore · Multiplayer

Ready or Not
Shared: Multiplayer · FPS · Action

Killing Floor 2
Shared: Gore · Multiplayer · Action

The Texas Chain Saw Massacre
Shared: Gore · Multiplayer · Horror

Dying Light
Shared: Horror · Survival · Gore

Paint the Town Red
Shared: Action · Gore · Multiplayer

Aliens vs. Predator™
Shared: Action · Multiplayer · Gore

Subnautica
Shared: Underwater · Survival · Horror