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

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

SANABI
Shared: Action · Pixel Graphics · Adventure

Dead Cells
Shared: Adventure · 2D · Pixel Graphics

Hollow Knight
Shared: Platformer · Indie · 2D

Celeste
Shared: Indie · Pixel Graphics · Platformer

Katana ZERO
Shared: Action · Pixel Graphics · Platformer

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Pixel Graphics

Broforce
Shared: Action · Pixel Graphics · 2D

Nine Sols
Shared: Action · Platformer · 2D

Hollow Knight: Silksong
Shared: Indie · 2D · Difficult

Noita
Shared: Pixel Graphics · Indie · 2D

Out There Somewhere
Shared: Indie · Platformer · Adventure

ScourgeBringer
Shared: Action · Indie · Adventure

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

MO:Astray
Shared: Action · Indie · Adventure

Jump King
Shared: Indie · Adventure · Action

Rogue Legacy 2
Shared: Action · Platformer · Indie

Rogue Legacy
Shared: Indie · Platformer · Action

Dungreed
Shared: Action · Indie · Pixel Graphics

Axiom Verge
Shared: Indie · Action · Platformer

Dungeon Munchies
Shared: Action · Indie · Adventure

Gato Roboto
Shared: Indie · Action · Adventure

Vampire Survivors
Shared: Indie · Pixel Graphics · 2D

Owlboy
Shared: Indie · Adventure · Pixel Graphics