Games like Odium
Games like Odium include Shape of Dreams, Hades, Megabonk, Hades II, and Skul: The Hero Slayer. We matched them by the tags players give Odium on Steam (Action Roguelike, PvE, Tutorial, Roguelike, and 3D): closest matches first, and among equally close ones the better-known games.

Shape of Dreams
Shared: Action Roguelike · PvE · Action

Hades
Shared: Action Roguelike · Roguelike · Action

Megabonk
Shared: Action Roguelike · Roguelike · Action

Hades II
Shared: Roguelike · Action Roguelike · Action

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

LORT
Shared: Action Roguelike · PvE · Roguelike

Crab Champions
Shared: Action Roguelike · Roguelike · 3D

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

Vellum
Shared: Action Roguelike · 3D · Roguelike

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Indie

ELDEN RING NIGHTREIGN
Shared: Roguelike · PvE · Action

Risk of Rain (2013)
Shared: Action Roguelike · Roguelike · Action

Touhou Dystopian
Shared: Action Roguelike · Action · 3D

Warhammer 40,000: Space Marine 2
Shared: PvE · Action · Third Person

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Action

Wizard of Legend
Shared: Action Roguelike · Roguelike · Action

Dead Cells
Shared: Action Roguelike · Roguelike · Action

Ravenswatch
Shared: Action Roguelike · Roguelike · Action

Rogue Legacy
Shared: Action Roguelike · Roguelike · Action

Hand of Fate
Shared: Roguelike · Action Roguelike · Action

Sephiria
Shared: Action Roguelike · Roguelike · Action

Garden of Witches
Shared: Action Roguelike · Roguelike · Action

Risk of Rain Returns
Shared: Action Roguelike · PvE · Action

Vampire Survivors
Shared: Action Roguelike · Roguelike · Action