Games like Cosmic Mirage
Games like Cosmic Mirage include Dead Cells, BALL x PIT, Skul: The Hero Slayer, Noita, and Vampire Survivors. We matched them by the tags players give Cosmic Mirage on Steam (Adventure, Action, Simulation, Arcade, and Roguelike): closest matches first, and among equally close ones the better-known games.

Dead Cells
Shared: Adventure · Roguelike · Action Roguelike

BALL x PIT
Shared: Action · Arcade · Roguelike

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

Noita
Shared: Roguelike · Action · Adventure

Vampire Survivors
Shared: Action Roguelike · Roguelike · Action

Rogue Legacy 2
Shared: Arcade · Action · Adventure

Alex Jones: NWO Wars
Shared: Action · Arcade · Shooter

Nova Drift
Shared: Arcade · Shoot 'Em Up · Action Roguelike

Enter the Gungeon
Shared: Roguelike · Action Roguelike · Adventure

Exit the Gungeon
Shared: Action · Adventure · Arcade

METAL SLUG
Shared: Action · Arcade · Side Scroller

Crab Champions
Shared: Action Roguelike · Roguelike · Arcade

SANABI
Shared: Action · Adventure · 2D Platformer

Downwell
Shared: Arcade · Action Roguelike · Action

Rogue Legacy
Shared: Action · Roguelike · Action Roguelike

Huntdown
Shared: Action · Shooter · Side Scroller

Aimlabs
Shared: Simulation · Action · Shooter

Broforce
Shared: Action · Shooter · 2D

Wizard of Legend
Shared: Roguelike · Action Roguelike · Action

BPM: BULLETS PER MINUTE
Shared: Action · Roguelike · Adventure

Anomaly Agent
Shared: 2D Platformer · Action Roguelike · Side Scroller

Guns, Gore and Cannoli 2
Shared: Action · Adventure · Shooter

METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up

Halls of Torment
Shared: Action Roguelike · Action · Roguelike