Games like Odinfall
Games like Odinfall include Vampire Survivors, Nuclear Throne, Enter the Gungeon, BALL x PIT, and Skul: The Hero Slayer. We matched them by the tags players give Odinfall on Steam (Roguelite, Pixel Graphics, Indie, Difficult, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Roguelite · Pixel Graphics · Bullet Hell

Nuclear Throne
Shared: Pixel Graphics · Indie · Difficult

Enter the Gungeon
Shared: Pixel Graphics · Bullet Hell · Difficult

BALL x PIT
Shared: Roguelite · Action · Bullet Hell

Skul: The Hero Slayer
Shared: Indie · Pixel Graphics · Action

Star of Providence
Shared: Roguelite · Bullet Hell · Indie

Halls of Torment
Shared: Roguelite · Pixel Graphics · Bullet Hell

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

Megabonk
Shared: Roguelite · Indie · Bullet Hell

The Binding of Isaac: Rebirth
Shared: Indie · Pixel Graphics · Difficult

SYNTHETIK: Legion Rising
Shared: Roguelite · Indie · Top-Down Shooter

Death Must Die
Shared: Roguelite · Pixel Graphics · Bullet Hell

Realm of the Mad God Exalt
Shared: Pixel Graphics · Bullet Hell · Roguelite

Dungreed
Shared: Pixel Graphics · Roguelite · Indie

Hades
Shared: Roguelite · Indie · Action Roguelike

Nova Drift
Shared: Roguelite · Bullet Hell · Shoot 'Em Up

Tiny Rogues
Shared: Bullet Hell · Roguelite · Difficult

Voidigo
Shared: Roguelite · Bullet Hell · Action Roguelike

Hotline Miami
Shared: Indie · Pixel Graphics · Action

Boneraiser Minions
Shared: Pixel Graphics · Roguelite · Bullet Hell

I Am Legion: Stand Survivors
Shared: Roguelite · Bullet Hell · Indie

Hotline Miami 2: Wrong Number
Shared: Pixel Graphics · Action · Difficult

UnderMine
Shared: Roguelite · Pixel Graphics · Indie

Noita
Shared: Pixel Graphics · Difficult · Indie