Games like GUNGUNGUN
Games like GUNGUNGUN include Broforce, Bright Memory: Infinite, My Friend Pedro, Hotline Miami, and Streets of Rage 4. We matched them by the tags players give GUNGUNGUN on Steam (Action, Indie, Violent, 2D, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · 2D · Indie

Bright Memory: Infinite
Shared: Action · Indie · Female Protagonist

My Friend Pedro
Shared: Action · Indie · Violent

Hotline Miami
Shared: Action · Violent · Indie

Streets of Rage 4
Shared: Action · Indie · 2D

Bleed
Shared: Action · Indie · Female Protagonist

Huntdown
Shared: Action · Shooter · 2D

Akane
Shared: Indie · Action · Violent

ICEY
Shared: Action · Female Protagonist · Indie

Vampire Survivors
Shared: Indie · 2D · Action

12 is Better Than 6
Shared: Action · Indie · Shooter

Hotline Miami 2: Wrong Number
Shared: Action · Violent · Indie

Fight'N Rage
Shared: Action · 2D · Indie

Bladed fury
Shared: Action · Indie · Female Protagonist

Superfighters Deluxe
Shared: Action · Indie · 2D

Exit the Gungeon
Shared: Indie · Action · Arcade

One Finger Death Punch 2
Shared: Action · Indie · 2D

DRAINUS
Shared: Action · Indie · 2D

Shank 2
Shared: Action · Indie · 2D

LUFTRAUSERS
Shared: Indie · Action · Arcade

ZeroRanger
Shared: Indie · Action · 2D

Rift of the NecroDancer
Shared: Indie · Action · Female Protagonist

Mother Russia Bleeds
Shared: Action · Violent · Indie

Bright Memory
Shared: Female Protagonist · Action · Shooter