Games like SuperTotalCarnage!
Games like SuperTotalCarnage! include Vampire Survivors, Halls of Torment, Death Must Die, Soulstone Survivors, and Skul: The Hero Slayer. We matched them by the tags players give SuperTotalCarnage! on Steam (Action Roguelike, Action, Bullet Hell, Roguelite, and Action RPG): closest matches first, and among equally close ones the better-known games.

Vampire 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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

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

BALL x PIT
Shared: Action · Roguelite · Bullet Hell

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

Hades
Shared: Action Roguelike · Roguelite · Action

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Action

Nova Drift
Shared: Bullet Hell · Action Roguelike · Roguelite

Hero Siege
Shared: Action Roguelike · Action RPG · Pixel Graphics

Dungreed
Shared: Action Roguelike · Action · Roguelite

Dead Cells
Shared: Action Roguelike · Roguelite · 2D

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

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Indie · Pixel Graphics

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

Renfield: Bring Your Own Blood
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Hades II
Shared: Action · Roguelite · Action Roguelike

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

Rogue Legacy
Shared: Action Roguelike · Action · 2D