Games like Stellar Outcast: Arena
Games like Stellar Outcast: Arena include Sky Force Reloaded, Project Wingman, BALL x PIT, Halo: Spartan Assault, and HELLDIVERS™ 2. We matched them by the tags players give Stellar Outcast: Arena on Steam (Shoot 'Em Up, Action, Top-Down Shooter, Flight, and PvE): closest matches first, and among equally close ones the better-known games.

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

Project Wingman
Shared: Action · Flight · Arcade

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

Halo: Spartan Assault
Shared: Action · Top-Down Shooter · Sci-fi

HELLDIVERS™ 2
Shared: PvE · Action · Sci-fi

STAR WARS™: Squadrons
Shared: Flight · Action · Sci-fi

Deep Rock Galactic: Survivor
Shared: Top-Down Shooter · PvE · Action

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

Cyberhunt
Shared: Action · Shoot 'Em Up · Arcade

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

RUNNING WITH RIFLES
Shared: Action · Top-Down Shooter · PvE

STAR WARS™ Battlefront™ II
Shared: Action · Singleplayer · Sci-fi

Starship Troopers: Extermination
Shared: Action · Sci-fi · PvE

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

Shadowgrounds
Shared: Top-Down Shooter · Action · Sci-fi

Ex-Zodiac
Shared: Shoot 'Em Up · Arcade · Flight

Crimzon Clover World EXplosion
Shared: Shoot 'Em Up · Action · Top-Down Shooter

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

LUFTRAUSERS
Shared: Action · Shoot 'Em Up · Arcade

EVERSPACE™
Shared: Action · Flight · Sci-fi

Cleared Hot
Shared: Flight · Action · Top-Down Shooter

Ikaruga
Shared: Shoot 'Em Up · Action · Arcade

Star Saviors
Shared: Shoot 'Em Up · Action · Arcade

Warhammer 40,000: Space Marine 2
Shared: Action · PvE · Sci-fi