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

Resident Evil 7 Biohazard
Shared: Horror · VR · Singleplayer

Outlast
Shared: Horror · Atmospheric · Survival Horror

Resident Evil Village
Shared: Horror · Singleplayer · Survival Horror

The Forest
Shared: Horror · Adventure · Survival Horror

Poppy Playtime
Shared: Horror · Singleplayer · Survival Horror

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · VR · Adventure

METRO 2033 Redux
Shared: Atmospheric · Horror · Singleplayer

Half-Life: Alyx
Shared: VR · Horror · Singleplayer

Metro Exodus
Shared: Singleplayer · Atmospheric · Horror

Outlast 2
Shared: Horror · Singleplayer · Survival Horror

Resident Evil 4
Shared: Horror · Singleplayer · Survival Horror

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

Sons Of The Forest
Shared: Horror · Survival Horror · Survival

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

The Beast Inside
Shared: Horror · Adventure · Survival Horror

Resident Evil Requiem
Shared: Horror · Survival Horror · Singleplayer

Granny
Shared: Horror · Singleplayer · Survival Horror

METRO Last Light Redux
Shared: Atmospheric · Horror · Singleplayer

Choo-Choo Charles
Shared: Horror · Singleplayer · Survival Horror

The Walking Dead: Saints & Sinners
Shared: VR · Horror · Adventure

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

Resident Evil 2
Shared: Horror · Singleplayer · Survival Horror

FIVE NIGHTS AT FREDDY'S: HELP WANTED
Shared: VR · Horror · Singleplayer

Garten of Banban
Shared: Horror · Singleplayer · VR