Games like Space Hero: Intergalactic Titan
Games like Space Hero: Intergalactic Titan include Vampire Survivors, Megabonk, Enter the Gungeon, Skul: The Hero Slayer, and The Binding of Isaac: Rebirth. We matched them by the tags players give Space Hero: Intergalactic Titan on Steam (Bullet Hell, Indie, Action Roguelike, Pixel Graphics, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Megabonk
Shared: Action Roguelike · Indie · Bullet Hell

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

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

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

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

Brotato
Shared: Bullet Hell · Action Roguelike · Singleplayer

Death Must Die
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Boneraiser Minions
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Indie · Pixel Graphics

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

Noobs Want to Live
Shared: Bullet Hell · Pixel Graphics · Action Roguelike

Dungreed
Shared: Action Roguelike · Pixel Graphics · Indie

Rocket Rats
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Seraph's Last Stand
Shared: Bullet Hell · Action Roguelike · 2D

Rogue Legacy
Shared: Indie · Action Roguelike · Action

20 Minutes Till Dawn
Shared: Bullet Hell · Action Roguelike · Pixel Graphics

Desktop Survivors 98
Shared: Bullet Hell · Action Roguelike · Action

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

LUFTRAUSERS
Shared: Bullet Hell · Indie · Pixel Graphics

Star of Providence
Shared: Bullet Hell · Action Roguelike · Indie

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

Hero Siege
Shared: Pixel Graphics · Action Roguelike · Indie

Cyberhunt
Shared: Indie · Action · Casual