Games like Project DeepWeb
Games like Project DeepWeb include Outer Wilds, Cyber Manhunt, What Remains of Edith Finch, Sally Face - Episode One, and Firewatch. We matched them by the tags players give Project DeepWeb on Steam (Simulation, Puzzle, Hacking, Adventure, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Exploration · Adventure · Story Rich

Cyber Manhunt
Shared: Simulation · Puzzle · Hacking

What Remains of Edith Finch
Shared: Atmospheric · Story Rich · Adventure

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

Firewatch
Shared: Adventure · Atmospheric · Story Rich

Strange Horticulture
Shared: Puzzle · Simulation · Atmospheric

Blue Prince
Shared: Puzzle · Exploration · Story Rich

Little Nightmares
Shared: Adventure · Atmospheric · Puzzle

Little Nightmares II
Shared: Puzzle · Adventure · Atmospheric

Stray
Shared: Adventure · Atmospheric · Puzzle

OneShot
Shared: Story Rich · Puzzle · Atmospheric

Return of the Obra Dinn
Shared: Puzzle · Atmospheric · Story Rich

Papers, Please
Shared: Simulation · Puzzle · Indie

The Room
Shared: Puzzle · Atmospheric · Adventure

The Room Three
Shared: Puzzle · Adventure · Atmospheric

Chants of Sennaar
Shared: Puzzle · Adventure · Atmospheric

FAR: Lone Sails
Shared: Adventure · Atmospheric · Puzzle

Hacknet
Shared: Simulation · Hacking · Story Rich

The Talos Principle
Shared: Puzzle · Atmospheric · Story Rich

Deliver Us The Moon
Shared: Adventure · Atmospheric · Puzzle

Killer Frequency
Shared: Puzzle · Adventure · Simulation

Servant of the Lake
Shared: Puzzle · Adventure · Story Rich

INSIDE
Shared: Atmospheric · Story Rich · Adventure

The Room Two
Shared: Puzzle · Atmospheric · Adventure