A premium retro handheld, in your pocket.
Game Boy, Game Boy Color, and Game Boy Advance, with a phosphor CRT aesthetic that actually looks like the screen you remember.
Phosphor is a polished emulator built for the .gb, .gbc, and .gba files you already own. Fast-forward, rewind, save states, MFi controllers, and a distinctive CRT interface. No ads, no subscriptions, no tracking.



Every classic, every party trick.
GB, GBC, and GBA
Bring your own .gb, .gbc, and .gba files. Accurate CPU, PPU, and APU cores.
CRT aesthetic
A signature phosphor-green visual treatment that makes the screen feel like the screen you remember.
Save states & rewind
Quick save, quick load, and rewind for the moments you didn't see coming.
Fast-forward
Speed through grinding or slow moments with a single tap.
Apple Watch
A retro handheld, on your wrist. (Yes, really.)
MFi & Bluetooth controllers
Plug in your gamepad. Layouts you control.
No ads, no tracking
No subscriptions, no analytics, no upsells in the middle of a level.
iPhone, iPad, Mac
Universal app that adapts to every screen size.
Inside the cabinet.






Free. The way an emulator should be.
Phosphor is free to download. No subscription, no ads, no tracking. Bring your own legally-obtained game files and play.