Games like Djinn - The Forbidden Knowledge
Games like Djinn - The Forbidden Knowledge include Firewatch, The Forest, Tainted Grail: The Fall of Avalon, Outer Wilds, and Subnautica. We matched them by the tags players give Djinn - The Forbidden Knowledge on Steam (Adventure, Open World, First-Person, Horror, and Mystery): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · First-Person · Mystery

The Forest
Shared: Open World · Horror · Adventure

Tainted Grail: The Fall of Avalon
Shared: Open World · Adventure · First-Person

Outer Wilds
Shared: Adventure · Mystery · Exploration

Subnautica
Shared: Horror · Open World · Adventure

Slime Rancher
Shared: Adventure · Open World · First-Person

Ghostwire: Tokyo
Shared: Open World · First-Person · Horror

Fallout 4
Shared: Open World · Adventure · Exploration

Atomic Heart
Shared: Adventure · Open World · Horror

The Witness
Shared: First-Person · Open World · Exploration

Sons Of The Forest
Shared: Open World · Horror · First-Person

DREDGE
Shared: Open World · Adventure · Exploration

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

The Long Dark
Shared: Open World · Adventure · First-Person

Subnautica: Below Zero
Shared: Open World · Horror · Singleplayer

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

The Elder Scrolls IV: Oblivion Remastered
Shared: Open World · Adventure · First-Person

The Painscreek Killings
Shared: Mystery · Horror · Exploration

Starfield
Shared: Open World · First-Person · Singleplayer

Valley
Shared: Adventure · First-Person · Exploration

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

The Vanishing of Ethan Carter
Shared: Mystery · Adventure · First-Person

Fallout: New Vegas
Shared: Open World · First-Person · Singleplayer

Subnautica 2
Shared: Horror · Open World · Exploration