Games like Monsters Hate Only the Princess
Games like Monsters Hate Only the Princess include Vampire Survivors, Megabonk, BALL x PIT, Halls of Torment, and Death Must Die. We matched them by the tags players give Monsters Hate Only the Princess on Steam (Action Roguelike, Bullet Hell, Action, Roguelite, and Roguelike): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Roguelite · Roguelike

BALL x PIT
Shared: Action · Bullet Hell · Roguelite

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

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

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

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

Hades
Shared: Action Roguelike · Roguelite · Action

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

Nuclear Throne
Shared: Action Roguelike · Roguelike · Bullet Hell

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Monsters are Coming!
Shared: Action · Roguelite · Bullet Hell

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

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Hades II
Shared: Action · Roguelite · Roguelike

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

Dead Cells
Shared: Action Roguelike · Roguelike · Roguelite

Atomicrops
Shared: Action · Bullet Hell · Roguelike

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Roguelite

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Roguelite

Dungreed
Shared: Action Roguelike · Roguelite · Action

Nova Drift
Shared: Bullet Hell · Action Roguelike · Roguelite

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelite