Games like Hope of Bion
Games like Hope of Bion include Little Nightmares II, Darkwood, Sally Face - Episode One, Resident Evil 4, and Outlast. We matched them by the tags players give Hope of Bion on Steam (2D, Zombies, Adventure, Atmospheric, and Action): closest matches first, and among equally close ones the better-known games.

Little Nightmares II
Shared: Adventure · Atmospheric · Dark

Darkwood
Shared: Adventure · Action · Dark

Sally Face - Episode One
Shared: Adventure · Dark · Psychological Horror

Resident Evil 4
Shared: Action · Zombies · Horror

Outlast
Shared: Atmospheric · Horror · Adventure

Deadlight
Shared: Zombies · Action · Adventure

Little Nightmares
Shared: Adventure · Atmospheric · Dark

Hollow Knight
Shared: 2D · Atmospheric · Adventure

LIMBO
Shared: 2D · Atmospheric · Dark

Resident Evil Village
Shared: Zombies · Action · Singleplayer

Resident Evil 2
Shared: Zombies · Action · Singleplayer

Resident Evil 7 Biohazard
Shared: Zombies · Atmospheric · Singleplayer

Rise of the Tomb Raider™
Shared: Adventure · Action · Singleplayer

Resident Evil Requiem
Shared: Zombies · Action · Horror

DISTRAINT: Deluxe Edition
Shared: 2D · Adventure · Atmospheric

SOMA
Shared: Atmospheric · Dark · Psychological Horror

Resident Evil 4 (2005)
Shared: Zombies · Action · Adventure

Five Nights at Freddy's: Into the Pit
Shared: 2D · Adventure · Horror

Poppy Playtime
Shared: Singleplayer · Dark · Horror

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Adventure · Dark

The Final Station
Shared: 2D · Adventure · Zombies

Tomb Raider Game of the Year
Shared: Adventure · Action · Singleplayer

Tiny Bunny
Shared: Atmospheric · Dark · 2D

Rusty Lake Paradise
Shared: Adventure · Atmospheric · 2D