Games like Sidebar Starship
Games like Sidebar Starship include Cookie Clicker, BALL x PIT, Shelldiver, Deep Rock Galactic: Survivor, and 20 Minutes Till Dawn. We matched them by the tags players give Sidebar Starship on Steam (Desktop Companion, Idler, Incremental, Top-Down Shooter, and Automation): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Incremental · Casual

BALL x PIT
Shared: Bullet Hell · Top-Down Shooter · Shoot 'Em Up

Shelldiver
Shared: Incremental · Idler · Casual

Deep Rock Galactic: Survivor
Shared: Top-Down Shooter · Bullet Heaven · Bullet Hell

20 Minutes Till Dawn
Shared: Bullet Hell · Top-Down Shooter · Shoot 'Em Up

Space Rock Breaker
Shared: Incremental · Idler · Casual

Keep on Mining!
Shared: Idler · Incremental · Casual

Rusty's Retirement
Shared: Idler · Desktop Companion · Automation

Cornerpond
Shared: Desktop Companion · Idler · Incremental

Desktop Defender
Shared: Desktop Companion · Idler · Incremental

Fortune Mill
Shared: Idler · Incremental · Automation

Deskrawl: Idle ARPG
Shared: Desktop Companion · Idler · Incremental

Cyberhunt
Shared: Shoot 'Em Up · Casual · Action

Incredicer
Shared: Idler · Incremental · Casual

Tiny Pasture
Shared: Idler · Incremental · Desktop Companion

A Game About Feeding A Black Hole
Shared: Incremental · Idler · Casual

Sky Force Reloaded
Shared: Shoot 'Em Up · Top-Down Shooter · Bullet Hell

Nodebuster
Shared: Incremental · Idler · Casual

SPACEPLAN
Shared: Incremental · Idler · Casual

DoDonPachi Resurrection
Shared: Top-Down Shooter · Shoot 'Em Up · Bullet Hell

Maltese's Fluffy Onsen
Shared: Desktop Companion · Automation · Idler

Brotato
Shared: Bullet Hell · Bullet Heaven · Top-Down Shooter

Deep Space Cache
Shared: Incremental · Idler · Casual

How to Train Your Cock
Shared: Desktop Companion · Idler · Incremental