Games like Astro Attack
Games like Astro Attack include Bit Blaster XL, Vampire Survivors, Planes, Bullets and Vodka, LUFTRAUSERS, and Nova Drift. We matched them by the tags players give Astro Attack on Steam (Shoot 'Em Up, Score Attack, Side Scroller, Bullet Hell, and Arcade): closest matches first, and among equally close ones the better-known games.

Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · 2D

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Action · Bullet Hell

LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Huntdown
Shared: Side Scroller · Shoot 'Em Up · Action

BALL x PIT
Shared: Action · Bullet Hell · Arcade

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade

METAL SLUG
Shared: Side Scroller · Arcade · Shoot 'Em Up

ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Action

DRAINUS
Shared: Shoot 'Em Up · Action · Shooter

Super Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Broforce
Shared: Action · Pixel Graphics · 2D

Alex Jones: NWO Wars
Shared: Shoot 'Em Up · Arcade · Action

Cyberhunt
Shared: Shoot 'Em Up · Action · Arcade

DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Action

METAL SLUG 3
Shared: Arcade · Side Scroller · Action

METAL SLUG X
Shared: Arcade · Shoot 'Em Up · Action

Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Blazing Chrome
Shared: Side Scroller · Shoot 'Em Up · Action

Beat Hazard
Shared: Shoot 'Em Up · Bullet Hell · 2D

DEVIL BLADE REBOOT
Shared: Shoot 'Em Up · Score Attack · Action

Sine Mora
Shared: Shoot 'Em Up · Bullet Hell · Side Scroller