Games like Quantum Gravity
Games like Quantum Gravity include STAR WARS™ Battlefront™ II, Stick It to the Stickman, Titanfall® 2, Battlefield™ 2042, and STAR WARS™ Battlefront II (Classic, 2005). We matched them by the tags players give Quantum Gravity on Steam (Action, Strategy, 2D Fighter, Shooter, and Combat): closest matches first, and among equally close ones the better-known games.

STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Singleplayer

Stick It to the Stickman
Shared: Action · 2D Fighter · Beat 'em up

Titanfall® 2
Shared: Shooter · Action · Singleplayer

Battlefield™ 2042
Shared: Shooter · Action · Singleplayer

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Sci-fi

Battlefield™ 6
Shared: Action · Shooter · Singleplayer

ShellShock Live
Shared: Strategy · Action · Shooter

Your Only Move Is HUSTLE
Shared: Action · 2D Fighter · Strategy

Call of Duty®: Black Ops III
Shared: Action · Shooter · Singleplayer

Brawlhalla
Shared: 2D Fighter · Action · Platformer

STAR WARS™ Battlefront
Shared: Shooter · Strategy · Sci-fi

Halo Infinite
Shared: Action · Shooter · Singleplayer

One Finger Death Punch
Shared: Action · 2D Fighter · Beat 'em up

Awesomenauts
Shared: Action · Platformer · Strategy

Half-Life 2
Shared: Action · Shooter · Sci-fi

Arma 3
Shared: Action · Shooter · Strategy

My Friend Pedro
Shared: Action · Shooter · Singleplayer

KovaaK's
Shared: Action · Shooter · Singleplayer

Dust: An Elysian Tail
Shared: Action · Platformer · Singleplayer

BioShock Infinite
Shared: Action · Shooter · Singleplayer

Broforce
Shared: Action · Platformer · Shooter

Black Mesa
Shared: Action · Shooter · Sci-fi

HELLDIVERS™ 2
Shared: Action · Shooter · Sci-fi

Rivals of Aether
Shared: 2D Fighter · Platformer · Action