Games like Acid Nimbus
Games like Acid Nimbus include Hotline Miami, Hotline Miami 2: Wrong Number, Enter the Gungeon, Celeste, and Katana ZERO. We matched them by the tags players give Acid Nimbus on Steam (Free to Play, Action, Indie, Violent, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Violent · Indie

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

Enter the Gungeon
Shared: Pixel Graphics · Bullet Hell · Indie

Celeste
Shared: Indie · Pixel Graphics · Difficult

Katana ZERO
Shared: Action · Pixel Graphics · Indie

Blasphemous
Shared: Pixel Graphics · Violent · Indie

Nuclear Throne
Shared: Indie · Pixel Graphics · Action

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

Akane
Shared: Indie · Action · Pixel Graphics

UBERMOSH
Shared: Action · Pixel Graphics · Indie

Vampire Survivors
Shared: Pixel Graphics · Indie · Bullet Hell

Ultimate Custom Night
Shared: Free to Play · Difficult · Indie

Party Hard
Shared: Pixel Graphics · Violent · Indie

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

Rabi-Ribi
Shared: Pixel Graphics · Female Protagonist · Indie

Party Hard 2
Shared: Indie · Action · Violent

Bloody Hell
Shared: Indie · Pixel Graphics · Free to Play

CARRION
Shared: Action · Pixel Graphics · Indie

War Thunder
Shared: Free to Play · Action · Free To Play

Noita
Shared: Pixel Graphics · Difficult · Indie

The Binding of Isaac: Rebirth
Shared: Indie · Pixel Graphics · Difficult

SMITE®
Shared: Free to Play · Action · Indie

Mother Russia Bleeds
Shared: Action · Violent · Pixel Graphics

Rubinite
Shared: Difficult · Pixel Graphics · Indie