Games like Radio Free Europa
Games like Radio Free Europa include Rogue: Genesia, Nova Drift, BALL x PIT, Enter the Gungeon, and Vampire Survivors. We matched them by the tags players give Radio Free Europa on Steam (Twin Stick Shooter, 2.5D, Sci-fi, Space, and Arcade): closest matches first, and among equally close ones the better-known games.

Rogue: Genesia
Shared: Twin Stick Shooter · Action Roguelike · Bullet Hell

Nova Drift
Shared: Arcade · Bullet Hell · Action Roguelike

BALL x PIT
Shared: Arcade · Bullet Hell · Action Roguelike

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Twin Stick Shooter

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Arcade

Nex Machina
Shared: Twin Stick Shooter · Arcade · Bullet Hell

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

Dead Estate
Shared: Twin Stick Shooter · Action Roguelike · Bullet Hell

Assault Android Cactus+
Shared: Twin Stick Shooter · Bullet Hell · Arcade

Windowkill
Shared: Twin Stick Shooter · Action Roguelike · Arcade

Beat Hazard
Shared: Twin Stick Shooter · Bullet Hell · Space

FTL: Faster Than Light
Shared: Space · Sci-fi · Indie

EVERSPACE™
Shared: Space · Sci-fi · Action Roguelike

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Arcade

SYNTHETIK 2
Shared: Twin Stick Shooter · Action Roguelike · Top-Down

Brotato
Shared: Action Roguelike · Bullet Hell · Sci-fi

Sektori
Shared: Twin Stick Shooter · Arcade · Bullet Hell

Time Wasters
Shared: Twin Stick Shooter · Action Roguelike · Bullet Hell

Waves
Shared: Twin Stick Shooter · Bullet Hell · Arcade

Sky Force Reloaded
Shared: Arcade · Bullet Hell · Shoot 'Em Up

Cyberhunt
Shared: Twin Stick Shooter · Arcade · Shoot 'Em Up

Megabonk
Shared: Action Roguelike · Bullet Hell · Arcade

Greedland
Shared: Twin Stick Shooter · Sci-fi · Bullet Hell

Risk of Rain Returns
Shared: Action Roguelike · Sci-fi · Arcade