Games like Space Survivor
Games like Space Survivor include Megabonk, Crab Champions, Vampire Survivors, Dyson Sphere Program, and BALL x PIT. We matched them by the tags players give Space Survivor on Steam (Roguelike, Spaceships, Base Building, Casual, and Automation): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Roguelike · Action Roguelike · Action

Crab Champions
Shared: Roguelike · Action Roguelike · Arcade

Vampire Survivors
Shared: Action Roguelike · Roguelike · Casual

Dyson Sphere Program
Shared: Base Building · Automation · Space

BALL x PIT
Shared: Roguelike · Action · Arcade

Factorio
Shared: Base Building · Automation · Casual

Rogue Tower
Shared: Roguelike · Casual · Base Building

Astro Prospector
Shared: Roguelike · Casual · Action Roguelike

Schedule I
Shared: Base Building · Automation · Simulation

Hades
Shared: Roguelike · Action Roguelike · Action

Risk of Rain 2
Shared: Roguelike · Action Roguelike · Action

Star Birds
Shared: Base Building · Automation · Casual

Astro Colony
Shared: Base Building · Automation · Casual

Hades II
Shared: Roguelike · Action · Action Roguelike

Project Lazarus
Shared: Casual · Action · Action Roguelike

Pax Autocratica
Shared: Base Building · Action Roguelike · Automation

Skul: The Hero Slayer
Shared: Roguelike · Action · Action Roguelike

Satisfactory
Shared: Base Building · Automation · First-Person

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

Wedding Witch
Shared: Roguelike · Casual · Action Roguelike

Brotato
Shared: Roguelike · Action Roguelike · Arcade

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

Hydroneer
Shared: Base Building · Automation · Casual

Noobs Want to Live
Shared: Roguelike · Action · Casual