Games like Monsters 'til Midnight
Games like Monsters 'til Midnight include Vampire Survivors, Enter the Gungeon, BALL x PIT, Megabonk, and Halls of Torment. We matched them by the tags players give Monsters 'til Midnight on Steam (Action Roguelike, Bullet Hell, Shoot 'Em Up, Roguelite, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

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

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

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

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

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

Star of Providence
Shared: Bullet Hell · Action Roguelike · Roguelite

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

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

Voidigo
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Risk of Rain 2
Shared: Action Roguelike · Co-op · Roguelite

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

I Am Legion: Stand Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

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

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Co-op

Sephiria
Shared: Action Roguelike · Roguelite · Co-op

Blazing Beaks
Shared: Action Roguelike · Roguelite · Pixel Graphics

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Pixel Graphics · Roguelike

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelite

Streets of Rogue
Shared: Action Roguelike · Roguelite · Pixel Graphics

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

The Spell Brigade
Shared: Bullet Hell · Roguelite · Action Roguelike

Rogue: Genesia
Shared: Bullet Hell · Action Roguelike · Roguelite