Games like Clowns
Games like Clowns include Skul: The Hero Slayer, BlazBlue Entropy Effect, Broforce, Dead Cells, and Anomaly Agent. We matched them by the tags players give Clowns on Steam (Side Scroller, Action Roguelike, Hack and Slash, Shooter, and 2D): closest matches first, and among equally close ones the better-known games.

Skul: The Hero Slayer
Shared: Action Roguelike · Action · 2D

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

Broforce
Shared: Action · 2D · Pixel Graphics

Dead Cells
Shared: Action Roguelike · 2D · Pixel Graphics

Anomaly Agent
Shared: Side Scroller · Action Roguelike · Hack and Slash

Katana ZERO
Shared: Action · Pixel Graphics · Hack and Slash

Rogue Legacy
Shared: Action Roguelike · Action · 2D

Hades
Shared: Action Roguelike · Hack and Slash · Action

Vampire Survivors
Shared: Action Roguelike · 2D · Pixel Graphics

SANABI
Shared: Pixel Graphics · Action · 2D

Dungreed
Shared: Action Roguelike · Pixel Graphics · Action

ICEY
Shared: Side Scroller · Hack and Slash · Action

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

Have a Nice Death
Shared: Action Roguelike · Hack and Slash · 2D

Celeste
Shared: Pixel Graphics · Indie · 2D

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

Hero Siege
Shared: Hack and Slash · Action Roguelike · Pixel Graphics

My Friend Pedro
Shared: Shooter · Action · Indie

Huntdown
Shared: Side Scroller · Shooter · Pixel Graphics

Death Must Die
Shared: Action Roguelike · Hack and Slash · Pixel Graphics

NINJA GAIDEN: Ragebound
Shared: Side Scroller · Action · Pixel Graphics

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

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · 2D · Side Scroller

Blade Assault
Shared: Action · Pixel Graphics · Side Scroller