Games like The Remnants
Games like The Remnants include The Painscreek Killings, The Exit 8, Outer Wilds, The Operator, and Strange Horticulture. We matched them by the tags players give The Remnants on Steam (Horror, Noir, Detective, Immersive Sim, and Puzzle): closest matches first, and among equally close ones the better-known games.

The Painscreek Killings
Shared: Detective · Horror · Puzzle

The Exit 8
Shared: Horror · Puzzle · Exploration

Outer Wilds
Shared: Exploration · Mystery · Puzzle

The Operator
Shared: Detective · Puzzle · Immersive Sim

Strange Horticulture
Shared: Puzzle · Detective · Mystery

The Vanishing of Ethan Carter
Shared: Detective · Horror · Mystery

Murdered: Soul Suspect
Shared: Detective · Horror · Mystery

Platform 8
Shared: Puzzle · Simulation · Immersive Sim

Return of the Obra Dinn
Shared: Detective · Puzzle · Mystery

The Room Two
Shared: Puzzle · Horror · Mystery

Inside the Backrooms
Shared: Horror · Puzzle · Exploration

L.A. Noire
Shared: Detective · Noir · Mystery

Killer Frequency
Shared: Horror · Puzzle · Simulation

The Room 4: Old Sins
Shared: Puzzle · Mystery · Horror

Unheard - Voices of Crime
Shared: Detective · Puzzle · Mystery

Blue Prince
Shared: Puzzle · Exploration · Mystery

What Remains of Edith Finch
Shared: Atmospheric · Exploration · Mystery

Firewatch
Shared: Atmospheric · Mystery · Exploration

INFRA
Shared: Puzzle · Exploration · Atmospheric

The Room
Shared: Puzzle · Mystery · Horror

The House of Da Vinci
Shared: Puzzle · Exploration · Mystery

Murders on the Yangtze River
Shared: Detective · Puzzle · Exploration

SOMA
Shared: Horror · Atmospheric · Exploration

Cyber Manhunt
Shared: Puzzle · Simulation · Detective