Games like DUEL
Games like DUEL include Grand Theft Auto V Legacy, PUBG: BATTLEGROUNDS, Aimlabs, HELLDIVERS™ 2, and Grand Theft Auto V Enhanced. We matched them by the tags players give DUEL on Steam (Indie, Third-Person Shooter, Flight, Third Person, and Shooter): closest matches first, and among equally close ones the better-known games.

Grand Theft Auto V Legacy
Shared: Third Person · Shooter · First-Person

PUBG: BATTLEGROUNDS
Shared: Shooter · Third-Person Shooter · First-Person

Aimlabs
Shared: Shooter · Third-Person Shooter · First-Person

HELLDIVERS™ 2
Shared: Third-Person Shooter · Shooter · Third Person

Grand Theft Auto V Enhanced
Shared: Shooter · Third Person · First-Person

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Third-Person Shooter · Shooter · First-Person

Risk of Rain 2
Shared: Third-Person Shooter · Shooter · Indie

STAR WARS™ Battlefront™ II
Shared: Third-Person Shooter · Shooter · Third Person

Project Wingman
Shared: Flight · Indie · Shooter

Call of Duty®: Modern Warfare® II
Shared: Shooter · Third-Person Shooter · First-Person

Century: Age of Ashes
Shared: Flight · Indie · Third Person

The Mean Greens - Plastic Warfare
Shared: Third-Person Shooter · Indie · Shooter

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Flight · Shooter · Third Person

Rogue Company
Shared: Third-Person Shooter · Shooter · Third Person

Titanfall® 2
Shared: Mechs · Shooter · First-Person

Vanquish
Shared: Third-Person Shooter · Shooter · Third Person

ARC Raiders
Shared: Third-Person Shooter · Shooter · Third Person

Max Payne 3
Shared: Third-Person Shooter · Shooter · Third Person

KovaaK's
Shared: Indie · Shooter · First-Person

Gearbits
Shared: Third-Person Shooter · Mechs · Shooter

Dead Space™ 2
Shared: Third-Person Shooter · Shooter · Third Person

Mecha Knights: Nightmare
Shared: Mechs · Indie · Shooter

Starward
Shared: Third-Person Shooter · Mechs · Shooter

Endless Alice
Shared: Indie · Third-Person Shooter · Shooter