Games like RGBY
Games like RGBY include Bit Blaster XL, Vampire Survivors, Enter the Gungeon, Beat Hazard, and Stick Fight: The Game. We matched them by the tags players give RGBY on Steam (Bullet Hell, Shooter, Twin Stick Shooter, 2D, and Casual): closest matches first, and among equally close ones the better-known games.

Bit Blaster XL
Shared: Bullet Hell · Shooter · 2D

Vampire Survivors
Shared: Bullet Hell · 2D · Indie

Enter the Gungeon
Shared: Bullet Hell · Twin Stick Shooter · Indie

Beat Hazard
Shared: Bullet Hell · Twin Stick Shooter · 2D

Stick Fight: The Game
Shared: 2D · 4 Player Local · Casual

ShellShock Live
Shared: 2D · Shooter · Casual

Minishoot' Adventures
Shared: Bullet Hell · Twin Stick Shooter · 2D

Broforce
Shared: 2D · Shooter · Indie

Geometry Wars: Retro Evolved
Shared: Twin Stick Shooter · Bullet Hell · Casual

Time Wasters
Shared: Bullet Hell · Twin Stick Shooter · 2D

Planes, Bullets and Vodka
Shared: Bullet Hell · Casual · Shooter

Windowkill
Shared: Bullet Hell · Indie · 2D

Duck Game
Shared: 2D · Shooter · Indie

Overcooked! 2
Shared: Casual · Local Co-Op · 4 Player Local

Just Shapes & Beats
Shared: Bullet Hell · 2D · Indie

Revolution Ace
Shared: Bullet Hell · Shooter · Indie

Castle Crashers®
Shared: 2D · 4 Player Local · Local Co-Op

Assault Android Cactus+
Shared: Bullet Hell · Twin Stick Shooter · Shooter

Cuphead
Shared: 2D · Bullet Hell · Local Co-Op

SpeedRunners
Shared: Indie · 2D · 4 Player Local

Chicken Invaders 5
Shared: Casual · Indie · Bullet Hell

Voidigo
Shared: Twin Stick Shooter · Bullet Hell · Local Co-Op

Move or Die
Shared: 2D · Indie · 4 Player Local

LUFTRAUSERS
Shared: Bullet Hell · Indie · 2D