Games like Skul: The Hero Slayer
Games like Skul: The Hero Slayer include Dead Cells, Rogue Legacy, The Binding of Isaac: Rebirth, Vampire Survivors, and Hades. We matched them by the tags players give Skul: The Hero Slayer on Steam (Indie, Action, Action Roguelike, Pixel Graphics, and Roguelike): closest matches first, and among equally close ones the better-known games.

Dead Cells
Shared: Action Roguelike · Roguelike · Pixel Graphics

Rogue Legacy
Shared: Indie · Action Roguelike · Action

The Binding of Isaac: Rebirth
Shared: Indie · Action Roguelike · Roguelike

Vampire Survivors
Shared: Action Roguelike · Pixel Graphics · Indie

Hades
Shared: Action Roguelike · Indie · Action

Dungreed
Shared: Action Roguelike · Pixel Graphics · Action

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

Enter the Gungeon
Shared: Action Roguelike · Pixel Graphics · Roguelike

Megabonk
Shared: Action Roguelike · Indie · Roguelike

ScourgeBringer
Shared: Indie · Action · Pixel Graphics

Hollow Knight
Shared: Indie · Platformer · 2D

Nuclear Throne
Shared: Action Roguelike · Indie · Pixel Graphics

Noita
Shared: Pixel Graphics · Roguelike · Indie

Rogue Legacy 2
Shared: Action · Indie · Platformer

Hades II
Shared: Action · Roguelike · Action Roguelike

The Binding of Isaac
Shared: Indie · Action Roguelike · Roguelike

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

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · 2D

SANABI
Shared: Action · Pixel Graphics · Indie

Halls of Torment
Shared: Action Roguelike · Pixel Graphics · Roguelite

Wizard of Legend
Shared: Action Roguelike · Pixel Graphics · Roguelike

Blasphemous
Shared: Pixel Graphics · Indie · 2D

Death Must Die
Shared: Action Roguelike · Pixel Graphics · Roguelite

Spelunky
Shared: Indie · Action Roguelike · Roguelike