Games like Collapse Relapse
Games like Collapse Relapse include Hollow Knight, Ori and the Will of the Wisps, Hollow Knight: Silksong, Dust: An Elysian Tail, and Nine Sols. We matched them by the tags players give Collapse Relapse on Steam (Metroidvania, Action, Adventure, Time Manipulation, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Singleplayer

Ori and the Will of the Wisps
Shared: Metroidvania · Action · Singleplayer

Hollow Knight: Silksong
Shared: Metroidvania · Singleplayer · Indie

Dust: An Elysian Tail
Shared: Action · Metroidvania · Adventure

Nine Sols
Shared: Metroidvania · Action · Platformer

Dead Cells
Shared: Metroidvania · Adventure · Action

SANABI
Shared: Action · Adventure · 2D Platformer

Rogue Legacy 2
Shared: Metroidvania · Action · Adventure

F.I.S.T.: Forged In Shadow Torch
Shared: Metroidvania · Action · Adventure

Constance
Shared: Metroidvania · Action · Singleplayer

Skul: The Hero Slayer
Shared: Action · Indie · Metroidvania

Owlboy
Shared: Adventure · Metroidvania · Indie

Axiom Verge
Shared: Metroidvania · Action · Indie

The Messenger
Shared: Metroidvania · Action · Platformer

Planet of Lana
Shared: Action · 2D Platformer · Singleplayer

CARRION
Shared: Metroidvania · Action · Adventure

Gato Roboto
Shared: Metroidvania · Action · Adventure

SteamWorld Dig 2
Shared: Metroidvania · Adventure · Action

Blasphemous
Shared: Metroidvania · Action · Indie

CONVERGENCE: A League of Legends Story™
Shared: Metroidvania · Adventure · 2D Platformer

ANIMAL WELL
Shared: Metroidvania · Adventure · Platformer

Monster Boy and the Cursed Kingdom
Shared: Action · Adventure · Metroidvania

Rain World
Shared: Atmospheric · Indie · Adventure

MIO: Memories in Orbit
Shared: Metroidvania · Singleplayer · Atmospheric