Games like 600Seconds ~The Deep Church~
Games like 600Seconds ~The Deep Church~ include Snowbreak: Containment Zone, DJMAX RESPECT V, Senren * Banka, Muse Dash, and Grand Theft Auto V Legacy. We matched them by the tags players give 600Seconds ~The Deep Church~ on Steam (Lovecraftian, Anime, Third-Person Shooter, Casual, and Cute): closest matches first, and among equally close ones the better-known games.

Snowbreak: Containment Zone
Shared: Anime · Third-Person Shooter · Action

DJMAX RESPECT V
Shared: Anime · Casual · Action

Senren * Banka
Shared: Third-Person Shooter · Anime · Cute

Muse Dash
Shared: Anime · Cute · Casual

Grand Theft Auto V Legacy
Shared: Action · Third-Person Shooter · Singleplayer

Little Witch Nobeta
Shared: Anime · Cute · Action

GOCCO OF WAR
Shared: Anime · Casual · Cute

PRAGMATA
Shared: Cute · Third-Person Shooter · Action

HELLDIVERS™ 2
Shared: Third-Person Shooter · Action · Shooter

MICROVOLTS: Recharged
Shared: Anime · Third-Person Shooter · Casual

Azur Lane Crosswave
Shared: Anime · Action · Cute

Just Cause™ 3
Shared: Third-Person Shooter · Action · Singleplayer

Max Payne 3
Shared: Third-Person Shooter · Action · Shooter

Tomb Raider Game of the Year
Shared: Action · Third-Person Shooter · Singleplayer

Strinova
Shared: Anime · Third-Person Shooter · Action

Hitman: Absolution
Shared: Action · Third-Person Shooter · Singleplayer

MiSide
Shared: Cute · Anime · Singleplayer

Sword Art Online: Fatal Bullet
Shared: Anime · Action · Third-Person Shooter

Warhammer 40,000: Space Marine 2
Shared: Third-Person Shooter · Action · Singleplayer

Caster
Shared: Third-Person Shooter · Action · Casual

Montaro
Shared: Anime · Cute · Casual

Resident Evil 4 (2005)
Shared: Third-Person Shooter · Action · Singleplayer

Call of Duty®: Modern Warfare® II
Shared: Action · Third-Person Shooter · Singleplayer

Mafia II (Classic)
Shared: Action · Third-Person Shooter · Singleplayer