Games like Sevyal
Games like Sevyal include Poppy Playtime, Outlast, Resident Evil 7 Biohazard, Resident Evil Village, and Outlast 2. We matched them by the tags players give Sevyal on Steam (Horror, Survival Horror, Psychological Horror, Singleplayer, and Action): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Singleplayer · Survival Horror

Outlast
Shared: Horror · Survival Horror · Psychological Horror

Resident Evil 7 Biohazard
Shared: Horror · Survival Horror · Singleplayer

Resident Evil Village
Shared: Horror · Survival Horror · Singleplayer

Outlast 2
Shared: Horror · Survival Horror · Psychological Horror

Garten of Banban
Shared: Horror · Singleplayer · Psychological Horror

Five Nights at Freddy's
Shared: Horror · Survival Horror · Singleplayer

Bendy and the Ink Machine
Shared: Horror · Singleplayer · Survival Horror

The Outlast Trials
Shared: Horror · Survival Horror · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Survival Horror

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

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

Five Nights at Freddy's 2
Shared: Horror · Survival Horror · Singleplayer

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Garten of Banban 2
Shared: Horror · Singleplayer · Psychological Horror

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

Resident Evil Requiem
Shared: Survival Horror · Horror · Action

Five Nights at Freddy's 3
Shared: Horror · Survival Horror · Singleplayer

MiSide
Shared: Psychological Horror · Horror · Singleplayer

Ultimate Custom Night
Shared: Horror · Singleplayer · Survival Horror

Slender: The Arrival
Shared: Horror · Survival Horror · Indie

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

Five Nights at Freddy's: Sister Location
Shared: Horror · Survival Horror · Singleplayer

Little Nightmares
Shared: Horror · Singleplayer · Atmospheric