Games like Undivine
Games like Undivine include Hollow Knight, Hollow Knight: Silksong, Nine Sols, Salt and Sanctuary, and Castlevania: Belmont's Curse. We matched them by the tags players give Undivine on Steam (Metroidvania, 2D Platformer, Souls-like, Medieval, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Souls-like · Platformer

Hollow Knight: Silksong
Shared: Metroidvania · Souls-like · Platformer

Nine Sols
Shared: Metroidvania · Souls-like · Platformer

Salt and Sanctuary
Shared: Metroidvania · Souls-like · 2D

Castlevania: Belmont's Curse
Shared: Metroidvania · 2D Platformer · Platformer

Blasphemous 2
Shared: Metroidvania · Souls-like · 2D Platformer

Black Myth: Wukong
Shared: Souls-like · RPG · Action-Adventure

Blasphemous
Shared: Metroidvania · Souls-like · 2D

STAR WARS Jedi: Fallen Order™
Shared: Souls-like · Action-Adventure · Platformer

ENDER MAGNOLIA: Bloom in the Mist
Shared: Metroidvania · Souls-like · 2D

ENDER LILIES: Quietus of the Knights
Shared: Metroidvania · Souls-like · 2D

Ori and the Will of the Wisps
Shared: Metroidvania · Platformer · Action-Adventure

Well Dweller
Shared: Metroidvania · Action-Adventure · 2D Platformer

Dust: An Elysian Tail
Shared: Metroidvania · Platformer · RPG

Deaths Gambit: Afterlife
Shared: Metroidvania · Souls-like · RPG

Afterimage
Shared: Metroidvania · 2D Platformer · Souls-like

F.I.S.T.: Forged In Shadow Torch
Shared: Metroidvania · Platformer · 2D Platformer

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · 2D Platformer · Souls-like

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Story Rich · Medieval

SANABI
Shared: 2D Platformer · Story Rich · 2D

Mina the Hollower
Shared: 2D Platformer · Action-Adventure · Platformer

Dead Cells
Shared: Metroidvania · Souls-like · 2D

GRIME
Shared: Metroidvania · Souls-like · Platformer

Castlevania Dominus Collection
Shared: Metroidvania · 2D Platformer · Action-Adventure