Games like Ouroboros
Games like Ouroboros include Vampire Survivors, The Binding of Isaac: Rebirth, Dead Cells, Skul: The Hero Slayer, and Balatro. We matched them by the tags players give Ouroboros on Steam (Action Roguelike, Roguelike, Arcade, Deckbuilding, and Score Attack): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Pixel Graphics · Roguelike

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

Dead Cells
Shared: Roguelike · Action Roguelike · Pixel Graphics

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

Balatro
Shared: Roguelike · Deckbuilding · Singleplayer

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

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

Megabonk
Shared: Action Roguelike · Roguelike · Arcade

Spelunky
Shared: Roguelike · Action Roguelike · Arcade

Halls of Torment
Shared: Action Roguelike · Roguelike · Pixel Graphics

Noita
Shared: Roguelike · Pixel Graphics · Difficult

Downwell
Shared: Action Roguelike · Arcade · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Roguelike · Pixel Graphics

BALL x PIT
Shared: Arcade · Roguelike · Action Roguelike

Dungreed
Shared: Action Roguelike · Roguelike · Pixel Graphics

Hades
Shared: Action Roguelike · Roguelike · Singleplayer

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

Rogue Legacy
Shared: Roguelike · Action Roguelike · Singleplayer

Timberman
Shared: Casual · Pixel Graphics · Arcade

Seraph's Last Stand
Shared: Action Roguelike · Casual · Roguelike

Brotato
Shared: Roguelike · Action Roguelike · Singleplayer

Wizard of Legend
Shared: Action Roguelike · Roguelike · Pixel Graphics

Ravenswatch
Shared: Roguelike · Action Roguelike · Action

Boneraiser Minions
Shared: Action Roguelike · Pixel Graphics · Arcade