Games like Second Person: Secret Laboratory
Games like Second Person: Secret Laboratory include Portal 2, Alice: Madness Returns, Five Nights at Freddy's: Security Breach, MiSide, and Ori and the Will of the Wisps. We matched them by the tags players give Second Person: Secret Laboratory on Steam (Experimental, Platformer, 3D Platformer, Horror, and Story Rich): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Singleplayer · Story Rich

Alice: Madness Returns
Shared: Horror · 3D Platformer · Singleplayer

Five Nights at Freddy's: Security Breach
Shared: Horror · Singleplayer · Story Rich

MiSide
Shared: Story Rich · Horror · Singleplayer

Ori and the Will of the Wisps
Shared: Platformer · Singleplayer · Action

In Sound Mind
Shared: Horror · Story Rich · Action

Sonic Frontiers
Shared: 3D Platformer · Action · Singleplayer

Bendy and the Dark Revival
Shared: Horror · Singleplayer · Action

Resident Evil Village
Shared: Horror · Singleplayer · Action

Resident Evil Requiem
Shared: Horror · Action · Singleplayer

A Story About My Uncle
Shared: Platformer · Singleplayer · 3D Platformer

Hello Neighbor
Shared: Horror · Story Rich · 3D Platformer

Little Nightmares II
Shared: Horror · Singleplayer · Story Rich

Buckshot Roulette
Shared: Horror · Singleplayer · Indie

Portal
Shared: 3D Platformer · Singleplayer · First-Person

Little Nightmares
Shared: Horror · Singleplayer · Story Rich

Hollow Knight
Shared: Platformer · Singleplayer · Indie

Resident Evil 4
Shared: Horror · Action · Singleplayer

METRO 2033 Redux
Shared: Horror · Story Rich · Singleplayer

Psychonauts 2
Shared: 3D Platformer · Story Rich · Singleplayer

SANABI
Shared: Story Rich · Action · Singleplayer

INSIDE
Shared: Horror · Story Rich · Singleplayer

Neon White
Shared: 3D Platformer · Platformer · Action

Metro Exodus
Shared: Singleplayer · Story Rich · Horror