Games like Forgot
Games like Forgot include No, I'm not a Human, The Room Two, The Room, What Remains of Edith Finch, and Layers of Fear (2016). We matched them by the tags players give Forgot on Steam (Choices Matter, Hidden Object, Psychological Horror, Puzzle, and Walking Simulator): closest matches first, and among equally close ones the better-known games.

No, I'm not a Human
Shared: Choices Matter · Psychological Horror · Horror

The Room Two
Shared: Puzzle · Hidden Object · Atmospheric

The Room
Shared: Puzzle · Hidden Object · Atmospheric

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · Exploration

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

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

SOMA
Shared: Psychological Horror · Horror · Atmospheric

The Exit 8
Shared: Puzzle · Walking Simulator · Psychological Horror

Poppy Playtime
Shared: Puzzle · Horror · Psychological Horror

Firewatch
Shared: Atmospheric · Walking Simulator · Mystery

Layers of Fear 2 (2019)
Shared: Psychological Horror · Horror · Walking Simulator

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · Psychological Horror

The Death | Thần Trùng
Shared: Psychological Horror · Puzzle · Horror

The Room Three
Shared: Puzzle · Hidden Object · Atmospheric

Anomaly Exit
Shared: Hidden Object · Psychological Horror · Puzzle

Firework
Shared: Puzzle · Horror · Psychological Horror

Sally Face - Episode One
Shared: Psychological Horror · Puzzle · Horror

DON'T SCREAM
Shared: Psychological Horror · Atmospheric · Horror

Backrooms: Escape Together
Shared: Psychological Horror · Horror · Atmospheric

Inside the Backrooms
Shared: Puzzle · Psychological Horror · Horror

Platform 8
Shared: Psychological Horror · Walking Simulator · Hidden Object

[Chillas Art] The Convenience Store
Shared: Psychological Horror · Horror · Atmospheric

35MM
Shared: Hidden Object · Walking Simulator · Choices Matter

The Cabin Factory
Shared: Psychological Horror · Choices Matter · Walking Simulator