Games like Overcast - Walden and the Werewolf
Games like Overcast - Walden and the Werewolf include Ready or Not, Black Mesa, Half-Life 2, Bendy and the Dark Revival, and Metro Exodus. We matched them by the tags players give Overcast - Walden and the Werewolf on Steam (Horror, Indie, Adventure, Action, and First-Person): closest matches first, and among equally close ones the better-known games.

Ready or Not
Shared: Horror · FPS · Singleplayer

Black Mesa
Shared: Action · FPS · First-Person

Half-Life 2
Shared: Action · FPS · Singleplayer

Bendy and the Dark Revival
Shared: Horror · Action · First-Person

Metro Exodus
Shared: Singleplayer · FPS · Horror

METRO 2033 Redux
Shared: Horror · FPS · Action

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

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

DOOM
Shared: Action · FPS · First-Person

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

METRO Last Light Redux
Shared: Horror · Action · FPS

Outlast
Shared: Horror · First-Person · Singleplayer

BioShock Infinite
Shared: Action · First-Person · Singleplayer

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

The Beast Inside
Shared: Horror · Adventure · First-Person

Atomic Heart
Shared: Adventure · Action · Horror

Left 4 Dead 2
Shared: FPS · Horror · Action

The Forest
Shared: Horror · Adventure · First-Person

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

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

DOOM Eternal
Shared: Action · FPS · Great Soundtrack

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

Choo-Choo Charles
Shared: Horror · First-Person · Singleplayer

Trepang2
Shared: Horror · Singleplayer · FPS