Games like Rogue Legacy 2
Games like Rogue Legacy 2 include Hollow Knight, Skul: The Hero Slayer, Rogue Legacy, Hollow Knight: Silksong, and Dead Cells. We matched them by the tags players give Rogue Legacy 2 on Steam (Arcade, Metroidvania, Platformer, Action, and Indie): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Indie

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

Rogue Legacy
Shared: Platformer · Indie · Action

Hollow Knight: Silksong
Shared: Metroidvania · Indie · Platformer

Dead Cells
Shared: Metroidvania · Adventure · Roguelite

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

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

Spelunky
Shared: Platformer · Indie · Arcade

Nine Sols
Shared: Metroidvania · Platformer · Action

Vampire Survivors
Shared: Roguelite · Indie · Arcade

Bloodstained: Ritual of the Night
Shared: Metroidvania · Action · RPG

Hades
Shared: Roguelite · Indie · Action

ScourgeBringer
Shared: Action · Indie · Roguelite

Dungreed
Shared: Action · Roguelite · Indie

Salt and Sanctuary
Shared: Metroidvania · Action · Platformer

The Binding of Isaac
Shared: Indie · Action · Difficult

Valdis Story: Abyssal City
Shared: Metroidvania · Platformer · Action

UnEpic
Shared: Metroidvania · Platformer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Action

Blasphemous
Shared: Metroidvania · Indie · Action

Risk of Rain (2013)
Shared: Platformer · Indie · Action

Geometry Dash
Shared: Difficult · Platformer · 2D

The Vagrant
Shared: Action · Metroidvania · RPG

Axiom Verge
Shared: Metroidvania · Platformer · Indie