Games like Ultratron
Games like Ultratron include Vampire Survivors, LUFTRAUSERS, ZeroRanger, Broforce, and Cyberhunt. We matched them by the tags players give Ultratron on Steam (Indie, Action, Arcade, Retro, and Twin Stick Shooter): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Indie · Pixel Graphics · Arcade

LUFTRAUSERS
Shared: Indie · Arcade · Action

ZeroRanger
Shared: Indie · Action · Shoot 'Em Up

Broforce
Shared: Action · Pixel Graphics · Indie

Cyberhunt
Shared: Indie · Action · Arcade

Blazing Chrome
Shared: Action · Retro · Indie

Enter the Gungeon
Shared: Indie · Pixel Graphics · Local Co-Op

Huntdown
Shared: Action · Pixel Graphics · Local Co-Op

UBERMOSH
Shared: Action · Indie · Arcade

Exit the Gungeon
Shared: Indie · Arcade · Action

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

UBERMOSH Vol.5
Shared: Indie · Action · Arcade

UFO 50
Shared: Indie · Action · Retro

Revolution Ace
Shared: Action · Indie · Shoot 'Em Up

Ikaruga
Shared: Arcade · Action · Shoot 'Em Up

Hotline Miami
Shared: Action · Indie · Pixel Graphics

Nex Machina
Shared: Action · Twin Stick Shooter · Arcade

Shovel Knight: Treasure Trove
Shared: Indie · Retro · Pixel Graphics

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

DRAINUS
Shared: Action · Indie · Shoot 'Em Up

UBERMOSH:WRAITH
Shared: Indie · Action · Arcade

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

Hotline Miami 2: Wrong Number
Shared: Action · Pixel Graphics · Indie

Cuphead
Shared: Indie · Local Co-Op · Retro