Games like Party House
Games like Party House include The Forest, Ultimate Custom Night, Bendy and the Dark Revival, Five Nights at Freddy's: Security Breach, and Outlast. We matched them by the tags players give Party House on Steam (Action, Adventure, Strategy, Point & Click, and 3D): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Adventure · Horror · Survival

Ultimate Custom Night
Shared: Horror · Strategy · First-Person

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

Five Nights at Freddy's: Security Breach
Shared: Horror · First-Person · Adventure

Outlast
Shared: First-Person · Horror · Survival Horror

The Beast Inside
Shared: Adventure · Action · Horror

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

Resident Evil Requiem
Shared: Action · Horror · Survival Horror

Five Nights at Freddy's 4
Shared: Horror · First-Person · Point & Click

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Action · First-Person

Escape the Backrooms
Shared: Horror · First-Person · Adventure

Resident Evil Village
Shared: Action · First-Person · Horror

Buckshot Roulette
Shared: Strategy · First-Person · Horror

Five Nights at Freddy's 3
Shared: Horror · First-Person · Strategy

We Happy Few
Shared: Adventure · Action · Survival

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Action

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

Resident Evil 4
Shared: Action · Horror · Survival Horror

Dying Light
Shared: Horror · First-Person · Survival Horror

Darkwood
Shared: Adventure · Action · Horror

Five Nights at Freddy's 2
Shared: Horror · First-Person · Survival Horror

Five Nights at Freddy's: Sister Location
Shared: Horror · First-Person · Strategy

Five Nights at Freddy's
Shared: Horror · Point & Click · Survival Horror

Bendy and the Ink Machine
Shared: First-Person · Horror · Singleplayer