Games like Space Survivor: Frontier
Games like Space Survivor: Frontier include Deep Rock Galactic: Survivor, Megabonk, Brotato, Enter the Gungeon, and Halls of Torment. We matched them by the tags players give Space Survivor: Frontier on Steam (Action Roguelike, Bullet Heaven, Bullet Hell, PvE, and Roguelike): closest matches first, and among equally close ones the better-known games.

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

Megabonk
Shared: Action Roguelike · Bullet Heaven · Roguelike

Brotato
Shared: Action Roguelike · Bullet Hell · Roguelike

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Roguelike

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelike

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

Death Must Die
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

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

Rogue: Genesia
Shared: Bullet Heaven · Action Roguelike · Bullet Hell

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Roguelike · Bullet Hell

Noobs Want to Live
Shared: Bullet Hell · Roguelike · Action Roguelike

Dead Cells
Shared: Action Roguelike · Roguelike · Pixel Graphics

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Atomicrops
Shared: Bullet Hell · Roguelike · Action Roguelike

Nomad Survival
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Neon Abyss
Shared: Bullet Heaven · Roguelike · Pixel Graphics

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Roguelike

The Spell Brigade
Shared: Bullet Heaven · Bullet Hell · Action Roguelike

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Returnal™
Shared: Bullet Hell · Roguelike · Action

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelike