Games like Space Crusaders
Games like Space Crusaders include Vampire Survivors, BALL x PIT, 20 Minutes Till Dawn, Deep Rock Galactic: Survivor, and Nuclear Throne. We matched them by the tags players give Space Crusaders on Steam (Action Roguelike, Shoot 'Em Up, Top-Down Shooter, Bullet Hell, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Roguelite

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Action Roguelike

Slime 3K: Rise Against Despot
Shared: Action Roguelike · Bullet Hell · Roguelite

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

Star of Providence
Shared: Action Roguelike · Shoot 'Em Up · Bullet Hell

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

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

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

SNKRX
Shared: Action Roguelike · Top-Down Shooter · Shoot 'Em Up

Voidigo
Shared: Action Roguelike · Shoot 'Em Up · Bullet Hell

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

I Am Legion: Stand Survivors
Shared: Action Roguelike · Shoot 'Em Up · Bullet Hell

Rogue: Genesia
Shared: Action Roguelike · Bullet Hell · Roguelite

Apocalypse Party
Shared: Action Roguelike · Top-Down Shooter · Bullet Hell

Brotato
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Roguelite

Time Wasters
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

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

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