Games like Boom Box Blue!
Games like Boom Box Blue! include Vampire Survivors, Pizza Tower, Exit the Gungeon, SUPER CHICKEN JUMPER, and Webbed. We matched them by the tags players give Boom Box Blue! on Steam (Bullet Hell, 2D Platformer, Action, Puzzle, and Difficult): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · 2D · Action

Pizza Tower
Shared: 2D Platformer · Action · Funny

Exit the Gungeon
Shared: Action · Bullet Hell · Arcade

SUPER CHICKEN JUMPER
Shared: Difficult · Arcade · 2D

Webbed
Shared: 2D Platformer · Cute · 2D

Zuma Deluxe
Shared: Puzzle · Arcade · 2D

Bit Blaster XL
Shared: Bullet Hell · Difficult · Arcade

Celeste
Shared: Difficult · 2D Platformer · 2D

UFO 50
Shared: Action · Arcade · 2D

Twin Shot Deluxe
Shared: Action · 2D Platformer · Arcade

Timberman
Shared: Action · Casual · 2D

A Dance of Fire and Ice
Shared: Difficult · 2D · Arcade

Baba Is You
Shared: Puzzle · Difficult · Cute

Eryi's Action
Shared: 2D Platformer · Action · Difficult

Enter the Gungeon
Shared: Bullet Hell · Difficult · Action

Pikuniku
Shared: Puzzle · Action · Cute

SANABI
Shared: Action · 2D Platformer · 2D

LUFTRAUSERS
Shared: Bullet Hell · Action · Arcade

Zuma's Revenge!
Shared: Action · Puzzle · Casual

Peggle Deluxe
Shared: Puzzle · Arcade · Casual

Super Meat Boy
Shared: 2D Platformer · Difficult · 2D

Cuphead
Shared: Difficult · Bullet Hell · 2D

Puyo Puyo™ Tetris® 2
Shared: Puzzle · Action · Arcade

Geometry Dash
Shared: Difficult · 2D · Colorful