Games like CRUX
Games like CRUX include ULTRAKILL, Brotato, The Binding of Isaac: Rebirth, DUSK, and Devil Daggers. We matched them by the tags players give CRUX on Steam (Arena Shooter, Action Roguelike, Fast-Paced, Replay Value, and Retro): closest matches first, and among equally close ones the better-known games.

ULTRAKILL
Shared: Fast-Paced · Arena Shooter · FPS

Brotato
Shared: Action Roguelike · Roguelike · Arena Shooter

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Replay Value · Roguelike

DUSK
Shared: Fast-Paced · Retro · FPS

Devil Daggers
Shared: Fast-Paced · FPS · Arena Shooter

Roboquest
Shared: Action Roguelike · FPS · Fast-Paced

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

Post Void
Shared: Fast-Paced · Action Roguelike · FPS

Swarmlake
Shared: Fast-Paced · FPS · Arena Shooter

Megabonk
Shared: Action Roguelike · Roguelike · Bullet Hell

ODDCORE
Shared: Arena Shooter · Roguelike · Retro

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

Gunfire Reborn
Shared: Roguelike · FPS · Action Roguelike

Bloodshed
Shared: Action Roguelike · Arena Shooter · FPS

Hades
Shared: Action Roguelike · Roguelike · Replay Value

Vampire Hunters
Shared: Action Roguelike · FPS · Arena Shooter

Project Warlock
Shared: Retro · FPS · Fast-Paced

Ziggurat
Shared: Action Roguelike · FPS · Roguelike

Noobs Are Coming
Shared: Action Roguelike · Arena Shooter · Roguelike

Deadlink
Shared: Action Roguelike · Fast-Paced · Arena Shooter

DOOM Eternal
Shared: Fast-Paced · FPS · Action

HYPER DEMON
Shared: Arena Shooter · Fast-Paced · FPS

Turbo Overkill
Shared: FPS · Retro · Fast-Paced

Immortal Redneck
Shared: Action Roguelike · Fast-Paced · FPS