Games like 1PX BOSS RUSH
Games like 1PX BOSS RUSH include Vampire Survivors, Exit the Gungeon, LUFTRAUSERS, Broforce, and BALL x PIT. We matched them by the tags players give 1PX BOSS RUSH on Steam (Action, Shooter, Arcade, 2D Platformer, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · 2D

Exit the Gungeon
Shared: Action · Arcade · Bullet Hell

LUFTRAUSERS
Shared: Action · Arcade · Bullet Hell

Broforce
Shared: Action · Pixel Graphics · 2D

BALL x PIT
Shared: Action · Arcade · Bullet Hell

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

Bit Blaster XL
Shared: Shooter · Bullet Hell · Arcade

Commando Collection
Shared: Action · Shooter · Arcade

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

Terminator 2D: NO FATE
Shared: 2D Platformer · Action · Arcade

Alex Jones: NWO Wars
Shared: Action · Shooter · Arcade

Planes, Bullets and Vodka
Shared: Action · Arcade · Shooter

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

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · 2D

ZeroRanger
Shared: Action · Bullet Hell · Arcade

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · Action

DRAINUS
Shared: Action · Shooter · 2D

Halls of Torment
Shared: Bullet Hell · Action · Pixel Graphics

UFO 50
Shared: Action · Arcade · Pixel Graphics

Huntdown
Shared: Shooter · Action · Pixel Graphics

Touhou Kinjoukyou ~ Fossilized Wonders.
Shared: Shooter · Action · Bullet Hell

Pizza Tower
Shared: 2D Platformer · Action · Indie

Downwell
Shared: Arcade · Pixel Graphics · Action

BioShock Infinite
Shared: Action · Shooter · Fantasy