Games like Graviton Core
Games like Graviton Core include Vampire Survivors, Super Hexagon, Bit Blaster XL, LUFTRAUSERS, and Star Saviors. We matched them by the tags players give Graviton Core on Steam (Action, Arcade, Bullet Hell, 2D, and Indie): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · 2D · Indie

Super Hexagon
Shared: Arcade · Indie · Action

Bit Blaster XL
Shared: Bullet Hell · Arcade · Action

LUFTRAUSERS
Shared: Arcade · Bullet Hell · Action

Star Saviors
Shared: Action · Bullet Hell · Indie

Exit the Gungeon
Shared: Arcade · Action · Indie

Windowkill
Shared: Action · Bullet Hell · Arcade

Brotato
Shared: Bullet Hell · Singleplayer · Sci-fi

Nova Drift
Shared: Bullet Hell · Arcade · Action

Defy Gravity Extended
Shared: Indie · Action · 2D

A Dance of Fire and Ice
Shared: Arcade · Indie · 2D

BALL x PIT
Shared: Action · Arcade · Bullet Hell

FTL: Faster Than Light
Shared: Space · Indie · Sci-fi

Orbt XL
Shared: Arcade · Action · 2D

Ikaruga
Shared: Arcade · Bullet Hell · Action

ZeroRanger
Shared: Bullet Hell · Action · Indie

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

Timberman
Shared: Action · Indie · 2D

Rogue Legacy 2
Shared: Arcade · Action · Indie

Savant - Ascent
Shared: Action · Indie · Bullet Hell

Just Shapes & Beats
Shared: Bullet Hell · Action · 2D

Skul: The Hero Slayer
Shared: Action · Indie · 2D

Cyberhunt
Shared: Action · Indie · Arcade

Jet Lancer
Shared: Action · Indie · 2D