Games like Fat Cat Survivors
Games like Fat Cat Survivors include Skul: The Hero Slayer, Megabonk, Vampire Survivors, Death Must Die, and Hades. We matched them by the tags players give Fat Cat Survivors on Steam (Action, Action Roguelike, Bullet Heaven, 2D, and Cats): closest matches first, and among equally close ones the better-known games.

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

Megabonk
Shared: Action Roguelike · Bullet Heaven · Action

Vampire Survivors
Shared: Action Roguelike · 2D · Singleplayer

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

Hades
Shared: Action Roguelike · Action · Indie

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

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · 2D

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Indie · 2D

Rogue Legacy
Shared: Action Roguelike · Action · 2D

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Action

Brotato
Shared: Action Roguelike · Bullet Heaven · Singleplayer

Have a Nice Death
Shared: Action Roguelike · 2D · Action

Boneraiser Minions
Shared: Action Roguelike · 2D · Bullet Heaven

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

Dungreed
Shared: Action Roguelike · Action · 2D

Antivirus Survivors 2003 Professional
Shared: Action Roguelike · Bullet Heaven · Action

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

Spirit Hunters: Infinite Horde
Shared: Action Roguelike · Bullet Heaven · Action

Risk of Rain (2013)
Shared: Action Roguelike · Action · Indie

BALL x PIT
Shared: Action · Action Roguelike · 2D

20 Minutes Till Dawn
Shared: Action Roguelike · Combat · Singleplayer

Karate Survivor
Shared: Action Roguelike · Bullet Heaven · 2D

Windowkill
Shared: Action · Action Roguelike · 2D

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