Games like SPACE FIGHTER:CODE 1999
Games like SPACE FIGHTER:CODE 1999 include Vampire Survivors, Enter the Gungeon, Star of Providence, 20 Minutes Till Dawn, and Nova Drift. We matched them by the tags players give SPACE FIGHTER:CODE 1999 on Steam (Shoot 'Em Up, Bullet Hell, Roguelite, Shooter, and Top-Down): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Roguelite · Pixel Graphics

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · Top-Down

Star of Providence
Shared: Bullet Hell · Roguelite · Shoot 'Em Up

20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Roguelite

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Roguelite

Brotato
Shared: Bullet Hell · Roguelite · Local Co-Op

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

BALL x PIT
Shared: Roguelite · Bullet Hell · Shoot 'Em Up

Greedland
Shared: Shoot 'Em Up · Roguelite · Bullet Hell

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Casual

Deep Rock Galactic: Survivor
Shared: Roguelite · Bullet Hell · Top-Down

Nuclear Throne
Shared: Bullet Hell · Roguelite · Pixel Graphics

Apocalypse Party
Shared: Bullet Hell · Casual · Shoot 'Em Up

Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Shooter

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Top-Down

Lizard Survivors: Battle for Hyperborea
Shared: Bullet Hell · Roguelite · Pixel Graphics

I Am Legion: Stand Survivors
Shared: Bullet Hell · Shoot 'Em Up · Roguelite

Rocket Rats
Shared: Bullet Hell · Roguelite · Pixel Graphics

ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Pixel Graphics

FTL: Faster Than Light
Shared: Space · Sci-fi · Procedural Generation

STAR WARS™ Battlefront™ II
Shared: Shooter · Space · Sci-fi

Death Must Die
Shared: Bullet Hell · Roguelite · Pixel Graphics

Halls of Torment
Shared: Bullet Hell · Roguelite · Pixel Graphics

Megabonk
Shared: Roguelite · Bullet Hell · Pixel Graphics