Games like Spaceforce Homeworld
Games like Spaceforce Homeworld include Counter-Strike 2, Bit Blaster XL, Alex Jones: NWO Wars, METAL SLUG, and Nova Drift. We matched them by the tags players give Spaceforce Homeworld on Steam (Action, Arcade, Shoot 'Em Up, and Shooter): closest matches first, and among equally close ones the better-known games.

Counter-Strike 2
Shared: Shooter · Action

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Shooter

Alex Jones: NWO Wars
Shared: Action · Arcade · Shooter

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

Nova Drift
Shared: Shoot 'Em Up · Arcade · Shooter

BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up

METAL SLUG 3
Shared: Arcade · Action · Shooter

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

Ikaruga
Shared: Shoot 'Em Up · Arcade · Action

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

Huntdown
Shared: Action · Shooter · Shoot 'Em Up

Revolution Ace
Shared: Action · Shoot 'Em Up · Shooter

Sky Force Reloaded
Shared: Arcade · Shoot 'Em Up · Action

LUFTRAUSERS
Shared: Arcade · Action · Shoot 'Em Up

Contra: Operation Galuga
Shared: Action · Arcade · Shooter

Geometry Wars™ 3: Dimensions Evolved
Shared: Action · Arcade · Shoot 'Em Up

METAL SLUG 2
Shared: Action · Arcade · Shoot 'Em Up

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Arcade · Shooter · Action

Touhou Kinjoukyou ~ Fossilized Wonders.
Shared: Shoot 'Em Up · Action · Shooter

ARCADE GAME SERIES: GALAGA
Shared: Action · Arcade · Shoot 'Em Up

Grand Theft Auto V Legacy
Shared: Action · Shooter

R-Type Final 2
Shared: Action · Shoot 'Em Up · Arcade

Commando Collection
Shared: Action · Shooter · Arcade

ZeroRanger
Shared: Shoot 'Em Up · Action · Arcade