Games like Price of Knowledge
Games like Price of Knowledge include Firewatch, Outer Wilds, Five Nights at Freddy's: Security Breach, Poppy Playtime, and Amnesia: Rebirth. We matched them by the tags players give Price of Knowledge on Steam (Horror, Adventure, Singleplayer, Story Rich, and First-Person): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Story Rich · Singleplayer

Outer Wilds
Shared: Adventure · Exploration · Story Rich

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

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

Amnesia: Rebirth
Shared: First-Person · Horror · Story Rich

Little Nightmares II
Shared: Horror · Adventure · Singleplayer

What Remains of Edith Finch
Shared: Story Rich · Adventure · First-Person

Bendy and the Dark Revival
Shared: Horror · Singleplayer · First-Person

Little Nightmares
Shared: Horror · Adventure · Singleplayer

Bendy and the Ink Machine
Shared: Horror · Singleplayer · First-Person

Layers of Fear (2016)
Shared: Horror · Singleplayer · First-Person

MiSide
Shared: Horror · Story Rich · Singleplayer

SOMA
Shared: Horror · Story Rich · Exploration

Portal 2
Shared: Singleplayer · First-Person · Story Rich

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

Stray
Shared: Adventure · Singleplayer · Exploration

The Talos Principle
Shared: First-Person · Puzzle · Story Rich

Sally Face - Episode One
Shared: Horror · Story Rich · Adventure

Blue Prince
Shared: Puzzle · Singleplayer · Exploration

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

Fallout 4
Shared: Singleplayer · Adventure · Exploration

Killer Frequency
Shared: Horror · Adventure · Puzzle

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

The Forest
Shared: Horror · Adventure · First-Person