Games like Submarine Survivor
Games like Submarine Survivor include Vampire Survivors, Megabonk, BALL x PIT, Hades, and Skul: The Hero Slayer. We matched them by the tags players give Submarine Survivor on Steam (Action Roguelike, Submarine, Action, Bullet Hell, and Indie): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Indie · Bullet Hell

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

Hades
Shared: Action Roguelike · Roguelite · Indie

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

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

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Brotato
Shared: Action Roguelike · Bullet Hell · Singleplayer

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

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

Rogue Legacy
Shared: Action Roguelike · Action · Indie

Nuclear Throne
Shared: Action Roguelike · Indie · Bullet Hell

Nova Drift
Shared: Bullet Hell · Action Roguelike · Roguelite

Windowkill
Shared: Action Roguelike · Action · Indie

Risk of Rain 2
Shared: Action Roguelike · Action · Roguelite

Pass the Fear
Shared: Action Roguelike · Bullet Hell · Roguelite

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Indie · Singleplayer

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Roguelite

Dungreed
Shared: Action Roguelike · Action · Roguelite

Astro Prospector
Shared: Action Roguelike · Bullet Hell · Roguelite

Star of Providence
Shared: Action Roguelike · Bullet Hell · Roguelite

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