Games like Ex Vitro
Games like Ex Vitro include Hollow Knight, Hollow Knight: Silksong, Ori and the Will of the Wisps, ANIMAL WELL, and F.I.S.T.: Forged In Shadow Torch. We matched them by the tags players give Ex Vitro on Steam (Exploration, Metroidvania, 2D Platformer, PvE, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Exploration

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

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

ANIMAL WELL
Shared: Exploration · Metroidvania · Platformer

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

Nine Sols
Shared: Metroidvania · Platformer · 2D

Cave Story+
Shared: Exploration · Metroidvania · Platformer

Rain World
Shared: Exploration · Platformer · 2D

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

Axiom Verge
Shared: Metroidvania · Platformer · 2D

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

MIO: Memories in Orbit
Shared: Exploration · Metroidvania · Platformer

Constance
Shared: Metroidvania · Platformer · 2D

Leap Year
Shared: Exploration · 2D Platformer · Metroidvania

SANABI
Shared: 2D Platformer · Action · 2D

Haiku, the Robot
Shared: Metroidvania · Exploration · Platformer

Öoo
Shared: Metroidvania · 2D Platformer · Exploration

Well Dweller
Shared: Metroidvania · Horror · Exploration

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

Wuppo: Definitive Edition
Shared: Exploration · Metroidvania · 2D Platformer

Prince of Persia The Lost Crown
Shared: Exploration · Metroidvania · 2D Platformer

Lethal Company
Shared: Exploration · Horror · PvE

Owlboy
Shared: Metroidvania · Platformer · 2D

Afterimage
Shared: Metroidvania · 2D Platformer · Exploration