Games like Spaceships
Games like Spaceships include Vampire Survivors, Cookie Clicker, Bit Blaster XL, Planes, Bullets and Vodka, and LUFTRAUSERS. We matched them by the tags players give Spaceships on Steam (Bullet Hell, Shoot 'Em Up, Casual, Incremental, and Collectathon): closest matches first, and among equally close ones the better-known games.

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

Cookie Clicker
Shared: Incremental · Casual · Collectathon

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

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

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

Cyberhunt
Shared: Casual · Shoot 'Em Up · Arcade

Timberman
Shared: Casual · Pixel Graphics · 2D

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

To The Core
Shared: Casual · Incremental · Arcade

BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up

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

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

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

Shelldiver
Shared: Casual · Incremental · Arcade

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

Nodebuster
Shared: Casual · Incremental · Arcade

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

Keep on Mining!
Shared: Incremental · Casual · Arcade

Space Rock Breaker
Shared: Casual · Incremental · Arcade

Boneraiser Minions
Shared: Bullet Hell · 2D · Pixel Graphics

Astro Prospector
Shared: Incremental · Casual · Bullet Hell

Distant Space
Shared: Shoot 'Em Up · Casual · Arcade

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

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Arcade