Games like Archive 1985
Games like Archive 1985 include Outlast, Firewatch, Choo-Choo Charles, Metro Exodus, and Poppy Playtime. We matched them by the tags players give Archive 1985 on Steam (FPS, Adventure, Walking Simulator, First-Person, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: First-Person · Horror · Psychological Horror

Firewatch
Shared: Adventure · Walking Simulator · First-Person

Choo-Choo Charles
Shared: Open World · First-Person · Survival Horror

Metro Exodus
Shared: FPS · Open World · First-Person

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

The Forest
Shared: Adventure · Open World · Horror

The Beast Inside
Shared: Adventure · First-Person · Horror

Layers of Fear (2016)
Shared: Walking Simulator · Psychological Horror · Horror

Dying Light
Shared: Horror · Survival Horror · Open World

Slender: The Arrival
Shared: First-Person · Horror · Survival Horror

Ready or Not
Shared: FPS · First-Person · Horror

Resident Evil Village
Shared: First-Person · Horror · Survival Horror

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

Visage
Shared: Psychological Horror · Horror · First-Person

Blair Witch
Shared: Adventure · Psychological Horror · Horror

Still Wakes the Deep
Shared: Psychological Horror · Horror · First-Person

Atomic Heart
Shared: Adventure · FPS · Open World

Resident Evil 7 Biohazard
Shared: First-Person · Horror · Survival Horror

SOMA
Shared: Psychological Horror · Horror · First-Person

Inside the Backrooms
Shared: Horror · Psychological Horror · Adventure

Resident Evil Requiem
Shared: FPS · Survival Horror · Horror

Outlast 2
Shared: Psychological Horror · First-Person · Horror

Lethal Company
Shared: First-Person · Horror · Psychological Horror

Amnesia: The Dark Descent
Shared: Psychological Horror · Horror · First-Person