Games like Sonus
Games like Sonus include R.E.P.O., Dead by Daylight, MECCHA CHAMELEON, Escape the Backrooms, and Among Us. We matched them by the tags players give Sonus on Steam (Casual, Multiplayer, Party Game, Horror, and Online Co-Op): closest matches first, and among equally close ones the better-known games.

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

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

MECCHA CHAMELEON
Shared: Casual · Multiplayer · Party Game

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

Among Us
Shared: Multiplayer · Online Co-Op · Party Game

Liars Bar
Shared: Casual · Multiplayer · Online Co-Op

Left 4 Dead 2
Shared: Multiplayer · Co-op · Online Co-Op

Phasmophobia
Shared: Multiplayer · Horror · Online Co-Op

Pacify
Shared: Multiplayer · Horror · Online Co-Op

PUBG: BATTLEGROUNDS
Shared: Multiplayer · Survival · PvP

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

Party Animals
Shared: Multiplayer · Casual · Party Game

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

Subnautica 2
Shared: Multiplayer · Horror · Survival

Witch It
Shared: Multiplayer · Casual · Online Co-Op

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

DayZ
Shared: Multiplayer · Online Co-Op · Survival

Dying Light
Shared: Horror · Online Co-Op · Survival

In Silence
Shared: Multiplayer · Horror · Online Co-Op

DEVOUR
Shared: Multiplayer · Horror · Online Co-Op

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

Sons Of The Forest
Shared: Multiplayer · Survival · Horror

Machine Party
Shared: Multiplayer · Party Game · Casual

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