Games like Rocket Cave Adventure
Games like Rocket Cave Adventure include Rogue Legacy 2, Celeste, Super Meat Boy, Downwell, and Geometry Dash. We matched them by the tags players give Rocket Cave Adventure on Steam (Roguelite, Procedural Generation, Difficult, Physics, and Precision Platformer): closest matches first, and among equally close ones the better-known games.

Rogue Legacy 2
Shared: Roguelite · Arcade · Action

Celeste
Shared: Difficult · Precision Platformer · Indie

Super Meat Boy
Shared: Difficult · Precision Platformer · 2D Platformer

Downwell
Shared: Precision Platformer · Arcade · Difficult

Geometry Dash
Shared: Difficult · Precision Platformer · Singleplayer

Noita
Shared: Physics · Difficult · Indie

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

SANABI
Shared: Action · 2D Platformer · Difficult

The Binding of Isaac
Shared: Difficult · Procedural Generation · Indie

Hollow Knight: Silksong
Shared: Difficult · Indie · Singleplayer

Hollow Knight
Shared: Difficult · Indie · Platformer

Pogostuck: Rage With Your Friends
Shared: Difficult · Precision Platformer · Action

VVVVVV
Shared: Precision Platformer · Difficult · 2D Platformer

Jump King
Shared: Difficult · Precision Platformer · Indie

Getting Over It with Bennett Foddy
Shared: Difficult · Physics · Singleplayer

We Who Are About To Die
Shared: Roguelite · Action · Physics

Hades
Shared: Roguelite · Action · Indie

Wall World
Shared: Roguelite · Difficult · Procedural Generation

Spelunky
Shared: Difficult · Procedural Generation · Indie

Rain World
Shared: Difficult · Indie · 2D Platformer

Vampire Survivors
Shared: Roguelite · Indie · Arcade

A Difficult Game About Climbing
Shared: Difficult · Precision Platformer · Physics

Spelunky 2
Shared: Difficult · 2D Platformer · Procedural Generation

The End Is Nigh
Shared: Precision Platformer · Difficult · Indie