Games like Pentacore
Games like Pentacore include Hollow Knight, Hollow Knight: Silksong, SANABI, Ori and the Will of the Wisps, and Dead Cells. We matched them by the tags players give Pentacore on Steam (Metroidvania, Action, 2D Platformer, Platformer, and Adventure): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · 2D

Hollow Knight: Silksong
Shared: Metroidvania · Indie · 2D

SANABI
Shared: Action · 2D Platformer · Adventure

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

Dead Cells
Shared: Metroidvania · Adventure · 2D

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

Nine Sols
Shared: Metroidvania · Action · Platformer

Axiom Verge
Shared: Metroidvania · Platformer · Action

Skul: The Hero Slayer
Shared: Action · Indie · 2D

Gato Roboto
Shared: Metroidvania · Action · Indie

Owlboy
Shared: Metroidvania · Adventure · Platformer

The Messenger
Shared: Metroidvania · Platformer · Action

Blasphemous
Shared: Metroidvania · 2D · Action

Rogue Legacy 2
Shared: Metroidvania · Action · Platformer

CARRION
Shared: Metroidvania · Action · Pixel Graphics

Celeste
Shared: Platformer · 2D Platformer · Indie

Katana ZERO
Shared: Action · Platformer · 2D Platformer

Rain World
Shared: Platformer · Indie · 2D

Rogue Legacy
Shared: Platformer · Action · Metroidvania

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

ANIMAL WELL
Shared: Metroidvania · Platformer · 2D

Super Meat Boy
Shared: Platformer · 2D Platformer · Indie

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

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