Games like Better Together
Games like Better Together include Phasmophobia, Lethal Company, Escape the Backrooms, Backrooms: Escape Together, and Inside the Backrooms. We matched them by the tags players give Better Together on Steam (Psychological Horror, Online Co-Op, Horror, Funny, and Mystery): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Online Co-Op · Psychological Horror · Horror

Lethal Company
Shared: Online Co-Op · Co-op · Horror

Escape the Backrooms
Shared: Psychological Horror · Horror · Online Co-Op

Backrooms: Escape Together
Shared: Psychological Horror · Online Co-Op · Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Co-op

DEVOUR
Shared: Online Co-Op · Horror · Co-op

Pacify
Shared: Online Co-Op · Horror · Co-op

Dead by Daylight
Shared: Horror · Online Co-Op · Co-op

The Outlast Trials
Shared: Co-op · Horror · Psychological Horror

PEAK
Shared: Co-op · Online Co-Op · Multiplayer

Nuclear Nightmare
Shared: Online Co-Op · Co-op · Horror

RV There Yet?
Shared: Co-op · Online Co-Op · Funny

Content Warning
Shared: Online Co-Op · Horror · Co-op

Demonologist
Shared: Psychological Horror · Horror · Online Co-Op

R.E.P.O.
Shared: Online Co-Op · Horror · Co-op

Zort
Shared: Co-op · Online Co-Op · Horror

BIGFOOT
Shared: Horror · Online Co-Op · Co-op

PANICORE
Shared: Online Co-Op · Psychological Horror · Horror

Labyrinthine
Shared: Co-op · Online Co-Op · Horror

Outlast
Shared: Horror · Psychological Horror · First-Person

Subnautica 2
Shared: Horror · Co-op · Multiplayer

Shift At Midnight
Shared: Online Co-Op · Horror · Co-op

Secret Neighbor: Hello Neighbor Multiplayer
Shared: Online Co-Op · Horror · Co-op

Lunch Lady
Shared: Online Co-Op · Horror · Co-op