Games like Barrett Foster : Prologue
Games like Barrett Foster : Prologue include Killer Frequency, The Forest, SchoolBoy Runaway, Blue Prince, and Crime Scene Cleaner. We matched them by the tags players give Barrett Foster : Prologue on Steam (Adventure, Simulation, Horror, Investigation, and Puzzle): closest matches first, and among equally close ones the better-known games.

Killer Frequency
Shared: Adventure · Horror · Puzzle

The Forest
Shared: Horror · Adventure · Exploration

SchoolBoy Runaway
Shared: Adventure · Simulation · Puzzle

Blue Prince
Shared: Puzzle · Investigation · Exploration

Crime Scene Cleaner
Shared: Simulation · Gore · Adventure

Outer Wilds
Shared: Adventure · Exploration · Puzzle

Poppy Playtime
Shared: Horror · Puzzle · Adventure

Ready or Not
Shared: Realistic · Horror · Adventure

MOLE
Shared: Simulation · Adventure · Horror

Platform 8
Shared: Adventure · Simulation · Puzzle

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

Stray
Shared: Adventure · Exploration · Puzzle

Amnesia: The Dark Descent
Shared: Horror · Gore · Puzzle

Slime Rancher
Shared: Adventure · Exploration · Simulation

Granny: Chapter Two
Shared: Adventure · Horror · Gore

Granny
Shared: Horror · Adventure · Puzzle

Metel - Horror Escape
Shared: Horror · Puzzle · Indie

Summon
Shared: Simulation · Horror · Puzzle

The Painscreek Killings
Shared: Investigation · Puzzle · Exploration

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

The Room
Shared: Puzzle · Adventure · Horror

Little Nightmares II
Shared: Adventure · Horror · Puzzle

Lucius
Shared: Adventure · Horror · Gore

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