Games like BeatHero
Games like BeatHero include Vampire Survivors, Halls of Torment, Death Must Die, Enter the Gungeon, and Necrosmith. We matched them by the tags players give BeatHero on Steam (Action Roguelike, Rhythm, Match 3, Bullet Hell, and Tower Defense): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · 2D

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

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

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

Necrosmith
Shared: Action Roguelike · Tower Defense · Bullet Hell

Last Command
Shared: Bullet Hell · Action Roguelike · Female Protagonist

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

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

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

Rabbit and Steel
Shared: Action Roguelike · Bullet Hell · Cute

Muse Dash
Shared: Rhythm · Female Protagonist · Cute

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Action RPG

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

Rhythm Witch: Beat Death
Shared: Rhythm · Action Roguelike · Bullet Hell

Rabi-Ribi
Shared: Bullet Hell · Female Protagonist · Action-Adventure

Kingdom Rush - Tower Defense
Shared: Tower Defense · Strategy · 2D

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Action-Adventure

Cult of the Lamb
Shared: Action Roguelike · Cute · 2D

Skul: The Hero Slayer
Shared: Action Roguelike · Action · 2D

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

Nova Drift
Shared: Bullet Hell · Action Roguelike · Action RPG

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

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

Just Shapes & Beats
Shared: Rhythm · Bullet Hell · 2D