Games like Secret Seeker
Games like Secret Seeker include Blue Prince, Lethal Company, Poppy Playtime, Escape the Backrooms, and Inside the Backrooms. We matched them by the tags players give Secret Seeker on Steam (Roguelite, First-Person, Hidden Object, Exploration, and Time Management): closest matches first, and among equally close ones the better-known games.

Blue Prince
Shared: Roguelite · Exploration · Mystery

Lethal Company
Shared: First-Person · Horror · Exploration

Poppy Playtime
Shared: First-Person · Horror · Psychological Horror

Escape the Backrooms
Shared: First-Person · Horror · Psychological Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · First-Person

Phasmophobia
Shared: Horror · First-Person · Psychological Horror

Outer Wilds
Shared: Exploration · Mystery · Adventure

CloverPit
Shared: Roguelite · First-Person · Psychological Horror

The Room 4: Old Sins
Shared: Mystery · Hidden Object · Adventure

The Room Two
Shared: Hidden Object · Mystery · Horror

SILENT HILL: Townfall
Shared: First-Person · Horror · Exploration

PEAK
Shared: First-Person · Exploration · Adventure

Platform 8
Shared: Psychological Horror · Hidden Object · Exploration

Five Nights at Freddy's: Secret of the Mimic
Shared: First-Person · Horror · Exploration

Amnesia: Rebirth
Shared: First-Person · Exploration · Horror

The Mound: Omen of Cthulhu
Shared: Roguelite · Psychological Horror · First-Person

Metel - Horror Escape
Shared: First-Person · Hidden Object · Horror

Pacify
Shared: Horror · First-Person · Exploration

Garten of Banban
Shared: First-Person · Horror · Psychological Horror

The Exit 8
Shared: Exploration · First-Person · Horror

SOMA
Shared: Psychological Horror · Horror · Exploration

What Remains of Edith Finch
Shared: First-Person · Exploration · Mystery

Five Nights at Freddy's: Security Breach
Shared: First-Person · Horror · Exploration

We Were Here
Shared: Mystery · Horror · Puzzle