Games like GALAK-Z
Games like GALAK-Z include Hades, Vampire Survivors, Megabonk, Skul: The Hero Slayer, and BALL x PIT. We matched them by the tags players give GALAK-Z on Steam (Action Roguelike, Action, Indie, Space, and Arcade): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Indie · Action

Vampire Survivors
Shared: Action Roguelike · Roguelite · Indie

Megabonk
Shared: Action Roguelike · Indie · Roguelite

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

BALL x PIT
Shared: Action · Action Roguelike · Arcade

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

Nova Drift
Shared: Action Roguelike · Arcade · Roguelite

Hades II
Shared: Action · Action Roguelike · Roguelite

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

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

EVERSPACE™
Shared: Action Roguelike · Action · Space

Nuclear Throne
Shared: Action Roguelike · Indie · Action

Halls of Torment
Shared: Action Roguelike · Roguelite · Action

Risk of Rain (2013)
Shared: Action Roguelike · Indie · Action

Ravenswatch
Shared: Action Roguelike · Action · Roguelike

Rogue Legacy
Shared: Action Roguelike · Indie · Action

Dungreed
Shared: Action Roguelike · Action · Indie

Rogue Legacy 2
Shared: Action · Arcade · Indie

SYNTHETIK: Legion Rising
Shared: Indie · Action · Action Roguelike

Gunfire Reborn
Shared: Roguelite · Indie · Action

Enter the Gungeon
Shared: Action Roguelike · Indie · Roguelike

Star of Providence
Shared: Action Roguelike · Roguelite · Indie

Spelunky
Shared: Action Roguelike · Indie · Roguelike

Streets of Rogue
Shared: Action Roguelike · Roguelite · Action