Games like Iron Diamond
Games like Iron Diamond include Ori and the Will of the Wisps, Hollow Knight, Prince of Persia The Lost Crown, Crypt Custodian, and Well Dweller. We matched them by the tags players give Iron Diamond on Steam (Metroidvania, Exploration, 2D Platformer, Action, and Adventure): closest matches first, and among equally close ones the better-known games.

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

Hollow Knight
Shared: Metroidvania · Exploration · Adventure

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

Crypt Custodian
Shared: Metroidvania · Exploration · Action

Well Dweller
Shared: Metroidvania · Action · Adventure

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

Hollow Knight: Silksong
Shared: Metroidvania · Exploration · Adventure

TUNIC
Shared: Exploration · Metroidvania · Cute

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

ANIMAL WELL
Shared: Metroidvania · Exploration · Adventure

Constance
Shared: Metroidvania · Action · Adventure

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

Öoo
Shared: Metroidvania · 2D Platformer · Exploration

Webbed
Shared: 2D Platformer · Exploration · Cute

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

MIO: Memories in Orbit
Shared: Metroidvania · Exploration · Action-Adventure

Slime Rancher
Shared: Exploration · Adventure · Cute

The Darkest Tales — Into the Nightmare
Shared: Adventure · Metroidvania · 2D Platformer

Leap Year
Shared: Exploration · 2D Platformer · Metroidvania

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

Nyaruru Fishy Fight
Shared: Metroidvania · 2D Platformer · Exploration

Afterimage
Shared: Metroidvania · 2D Platformer · Exploration

STAR WARS Jedi: Fallen Order™
Shared: Exploration · Action-Adventure · Action

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