Games like Rex Rocket
Games like Rex Rocket include Hollow Knight, Hollow Knight: Silksong, Axiom Verge, Shovel Knight: Treasure Trove, and The Messenger. We matched them by the tags players give Rex Rocket on Steam (Action, Adventure, Indie, Metroidvania, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Indie

Hollow Knight: Silksong
Shared: Metroidvania · Indie · Difficult

Axiom Verge
Shared: Indie · Metroidvania · Action

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

The Messenger
Shared: Metroidvania · Platformer · Retro

Out There Somewhere
Shared: Indie · Platformer · Adventure

Celeste
Shared: Indie · Pixel Graphics · Difficult

Gato Roboto
Shared: Action · Indie · Metroidvania

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

Blasphemous
Shared: Metroidvania · Pixel Graphics · Indie

SANABI
Shared: Action · Adventure · Pixel Graphics

Nine Sols
Shared: Metroidvania · Action · Platformer

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

Environmental Station Alpha
Shared: Adventure · Metroidvania · Indie

Katana ZERO
Shared: Action · Pixel Graphics · Platformer

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

Bloodstained: Curse of the Moon
Shared: Action · Platformer · Retro

VVVVVV
Shared: Indie · Platformer · Pixel Graphics

Dead Cells
Shared: Adventure · Metroidvania · Pixel Graphics

Angry Video Game Nerd Adventures
Shared: Action · Indie · Platformer

Rogue Legacy 2
Shared: Action · Metroidvania · Indie

Hyper Light Drifter
Shared: Indie · Adventure · Action

La-Mulana
Shared: Metroidvania · Indie · Adventure

Jump King
Shared: Indie · Adventure · Difficult