Games like Mighty X Arms
Games like Mighty X Arms include Brotato, Vampire Survivors, Hades, Megabonk, and Death Must Die. We matched them by the tags players give Mighty X Arms on Steam (Action Roguelike, Arena Shooter, Hack and Slash, Top-Down Shooter, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Brotato
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Hades
Shared: Action Roguelike · Hack and Slash · Roguelite

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

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

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

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Noobs Are Coming
Shared: Action Roguelike · Arena Shooter · Roguelite

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Hades II
Shared: Hack and Slash · Action Roguelike · Roguelite

Nova Drift
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

FatalZone
Shared: Action Roguelike · Bullet Hell · Arena Shooter

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

Yet Another Zombie Survivors
Shared: Action Roguelike · Top-Down Shooter · Roguelite

Arms of God
Shared: Action Roguelike · Top-Down Shooter · Arena Shooter

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

Time Wasters
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Dead Cells
Shared: Action Roguelike · Hack and Slash · Roguelite

Geometry Arena
Shared: Arena Shooter · Hack and Slash · Top-Down Shooter

SNKRX
Shared: Action Roguelike · Arena Shooter · Top-Down Shooter

Asgard's Fall — Viking Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite