Games like Galactic Glitch
Games like Galactic Glitch include Enter the Gungeon, Nuclear Throne, Brotato, SYNTHETIK: Legion Rising, and The Binding of Isaac. We matched them by the tags players give Galactic Glitch on Steam (Action Roguelike, Twin Stick Shooter, Physics, Roguelike, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Roguelike · Difficult

Brotato
Shared: Action Roguelike · Roguelike · Bullet Hell

SYNTHETIK: Legion Rising
Shared: Action Roguelike · Top-Down Shooter · Twin Stick Shooter

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Difficult

Noita
Shared: Physics · Roguelike · Difficult

Tiny Rogues
Shared: Action Roguelike · Top-Down Shooter · Bullet Hell

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

Hades
Shared: Action Roguelike · Roguelike · Action

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Difficult

Voidigo
Shared: Action Roguelike · Twin Stick Shooter · Roguelike

Relic Hunters Zero: Remix
Shared: Twin Stick Shooter · Action Roguelike · Top-Down Shooter

Megabonk
Shared: Action Roguelike · Roguelike · Bullet Hell

Dead Estate
Shared: Action Roguelike · Twin Stick Shooter · Roguelike

Pathogenic
Shared: Roguelike · Action Roguelike · Top-Down Shooter

BALL x PIT
Shared: Action Roguelike · Roguelike · Bullet Hell

Blazing Beaks
Shared: Action Roguelike · Roguelike · Top-Down Shooter

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Action

Skul: The Hero Slayer
Shared: Action Roguelike · Roguelike · Action

ANVIL
Shared: Action Roguelike · Top-Down Shooter · Roguelike

Ravenswatch
Shared: Action Roguelike · Roguelike · Difficult

Brigador: Up-Armored Edition
Shared: Twin Stick Shooter · Top-Down Shooter · Difficult

Maniac
Shared: Action Roguelike · Top-Down Shooter · Singleplayer

Halls of Torment
Shared: Action Roguelike · Roguelike · Bullet Hell