Games like Apex Automata
Games like Apex Automata include Vampire Survivors, 20 Minutes Till Dawn, BALL x PIT, Megabonk, and Planes, Bullets and Vodka. We matched them by the tags players give Apex Automata on Steam (Action, Action Roguelike, Casual, Bullet Hell, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Casual

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

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

Megabonk
Shared: Action Roguelike · Bullet Hell · Action

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

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

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

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Casual

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

Twilight Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Action Roguelike

Goobies
Shared: Action Roguelike · Bullet Hell · Casual

Brotato
Shared: Action Roguelike · Bullet Hell · Singleplayer

Project Lazarus
Shared: Action · Action Roguelike · Casual

Cyberhunt
Shared: Action · Casual · Shoot 'Em Up

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Action

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Action

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

Rocket Rats
Shared: Action Roguelike · Casual · Bullet Hell

Apocalypse Party
Shared: Casual · Action Roguelike · Bullet Hell

LUFTRAUSERS
Shared: Action · Bullet Hell · Arcade

Windowkill
Shared: Action · Action Roguelike · Bullet Hell

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

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade