Games like Pewt 'em Up!
Games like Pewt 'em Up! include BALL x PIT, Vampire Survivors, Bit Blaster XL, Nova Drift, and Huntdown. We matched them by the tags players give Pewt 'em Up! on Steam (Action, Arcade, Shooter, Shoot 'Em Up, and Roguelite): closest matches first, and among equally close ones the better-known games.

BALL x PIT
Shared: Action · Arcade · Roguelite

Vampire Survivors
Shared: Roguelite · Pixel Graphics · 2D

Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · Arcade

Nova Drift
Shared: Shoot 'Em Up · Arcade · Roguelite

Huntdown
Shared: Action · Shooter · Pixel Graphics

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Arcade

LUFTRAUSERS
Shared: Arcade · Action · Shoot 'Em Up

Broforce
Shared: Action · Pixel Graphics · 2D

ZeroRanger
Shared: Shoot 'Em Up · Action · Arcade

METAL SLUG
Shared: Action · Arcade · 2D

Talented
Shared: Shoot 'Em Up · Roguelite · Pixel Graphics

METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up

ARCADE GAME SERIES: GALAGA
Shared: Action · Arcade · Shoot 'Em Up

DRAINUS
Shared: Action · Shoot 'Em Up · Shooter

Cyberhunt
Shared: Action · Shoot 'Em Up · Arcade

METAL SLUG 3
Shared: Arcade · Action · Shooter

Blazing Chrome
Shared: Action · Shoot 'Em Up · Pixel Graphics

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

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

Starship Troopers: Extermination
Shared: Action · Arcade · Sci-fi

Ikaruga
Shared: Arcade · Shoot 'Em Up · Action

Star Saviors
Shared: Action · Shoot 'Em Up · Arcade

UFO 50
Shared: Action · Arcade · Pixel Graphics

Warhammer 40,000: Boltgun
Shared: Action · Shooter · Pixel Graphics