Games like The Ultimatest Battle
Games like The Ultimatest Battle include Brawlhalla, Broforce, Apex Legends™, Delta Force, and Once Human. We matched them by the tags players give The Ultimatest Battle on Steam (Free to Play, Action, Indie, Massively Multiplayer, and 2D): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: Free to Play · Multiplayer · Fighting

Broforce
Shared: Action · 2D · Indie

Apex Legends™
Shared: Free to Play · Multiplayer · Action

Delta Force
Shared: Free to Play · Massively Multiplayer · Multiplayer

Once Human
Shared: Free to Play · Action · Multiplayer

Paladins®
Shared: Free to Play · Action · Multiplayer

Marvel Rivals
Shared: Free to Play · Multiplayer · Action

Stick Fight: The Game
Shared: Action · Multiplayer · Fighting

Destiny 2
Shared: Free to Play · Multiplayer · Co-op

SMITE®
Shared: Free to Play · Action · Multiplayer

Halo Infinite
Shared: Free to Play · Action · Multiplayer

THE FINALS
Shared: Free to Play · Multiplayer · Action

War Thunder
Shared: Free to Play · Action · Multiplayer

Awesomenauts
Shared: Action · 2D · Multiplayer

PUBG: BATTLEGROUNDS
Shared: Multiplayer · Action · Shooter

World of Warships
Shared: Free to Play · Multiplayer · Shooter

Duck Game
Shared: Action · Multiplayer · 2D

Enlisted
Shared: Free to Play · Action · Multiplayer

Cuphead
Shared: 2D · Indie · Platformer

Warframe
Shared: Free to Play · Action · Massively Multiplayer

KurtzPel
Shared: Free to Play · Action · Multiplayer

ShellShock Live
Shared: Action · Multiplayer · 2D

Century: Age of Ashes
Shared: Free to Play · Action · Multiplayer

King Arthur's Gold
Shared: Action · 2D · Multiplayer