Games like Bad Guy Adventure
Games like Bad Guy Adventure include Skul: The Hero Slayer, Vampire Survivors, SANABI, Broforce, and The Binding of Isaac: Rebirth. We matched them by the tags players give Bad Guy Adventure on Steam (Side Scroller, Action Roguelike, 2D Platformer, Shooter, and Indie): closest matches first, and among equally close ones the better-known games.

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

Vampire Survivors
Shared: Action Roguelike · Indie · 2D

SANABI
Shared: 2D Platformer · Pixel Graphics · Action

Broforce
Shared: Action · 2D · Side Scroller

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

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Action Roguelike

My Friend Pedro
Shared: Shooter · Indie · Action

Rogue Legacy
Shared: Action Roguelike · Indie · 2D

Katana ZERO
Shared: 2D Platformer · Action · Pixel Graphics

Dungreed
Shared: Action Roguelike · Indie · Pixel Graphics

Huntdown
Shared: Side Scroller · Shooter · Pixel Graphics

Downwell
Shared: Action Roguelike · Indie · 2D Platformer

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

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

20XX
Shared: Action Roguelike · 2D Platformer · Action

30XX
Shared: Action Roguelike · Side Scroller · 2D Platformer

DEADBOLT
Shared: Indie · 2D · Side Scroller

Celeste
Shared: Indie · 2D Platformer · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Indie · Pixel Graphics

Hotline Miami
Shared: Indie · Action · Violent

Pizza Tower
Shared: 2D Platformer · Indie · Pixel Graphics

Door Kickers: Action Squad
Shared: 2D Platformer · Shooter · Pixel Graphics

Megabonk
Shared: Action Roguelike · Indie · Action

Super Meat Boy
Shared: 2D Platformer · Indie · 2D