A wall that keeps moving
Still screens rotate out after a while with an old-school CRT collapse, warm-up glow, or burst of analog static.
Universal Mac App · Beta
FujiGrid
Fill your displays with a living, playable mosaic of Atari 8-bits. Every little screen boots something different—and the wall never stays the same for long.
“FujiGrid is amazing. Absolute inspired madness. My new forever screensaver!”
Random bootsPlayable tilesCRT transitionsMulti-displayReal screen saver
What it does
A tiny Atari festival on every screen.
Point FujiGrid at a folder of Atari software. It explores that folder and its subfolders, picks files at random, and runs each one in its own independent emulator.
Click one. Play it.
A tile smoothly grows to fill the display. Use arrow keys or a USB controller, then press Escape to return it to the grid.
Made for many monitors
Run a separate balanced grid on every display. FujiGrid adapts the tile count and frame rate when the Mac gets busy.
Your collection, shuffled
FujiGrid reads ATR, XEX, CAR, ROM, A52, and other Atari formats—even inside ZIP archives and nested folders.
Curate as you watch
Pin a favorite so it stays, permanently hide something you never want to see again, or replace one tile immediately.
Yes, it is a screen saver
Install the streamlined FujiGrid screen saver from Preferences and let a fresh, randomized wall take over when your Mac rests.
Hands on
Watch the wall.
Then jump in.
- ClickEnlarge and play a tile
- JoystickMove around the grid and choose a game
- KeyboardUse ↑ ↓ ← → to play if you don’t have a joystick
- EscapeReturn to the grid
- SA cacophony of game sounds
System requirements
Built for modern Macs and gloriously old software.
MacApple Silicon or IntelOne Universal download for both
macOSmacOS 13 or laterVentura, Sonoma, Sequoia, Tahoe, and beyond
GamesYour Atari software folderOr let FujiGrid create one with eight redistributable programs
OptionalUSB game controllerKeyboard controls work too
Little questions, quick answers
Q&A
What machines does this emulate?
Atari 400/800 computers, Atari XL/XE computers, and the Atari 5200 game system.
Does FujiGrid include any software?
Yes. It can create a visible starter folder containing eight programs cleared for redistribution: Princess and Frog, Sea Chase, Nitro, Anteater, Trans-Lux, Yoomp!, Kaverns of Kfest, and Time Pilot. You can add or remove files whenever you like.
How can I get more games?
FujiGrid welcomes ATRs, ROMs, and other supported Atari software that you legally own. It also comes with a small collection of free-to-distribute programs to get you started. And, of course, if you happen to have the Internet Archive command-line tool, run this from the folder where you want the files:
ia download --search 'collection:atari_8bit_library_games' --glob='*.atr|*.rom' --no-directoriesCan I use my own Atari collection?
Absolutely. Choose your main software folder in Preferences. FujiGrid searches its subfolders and supported ZIP files too.
Is every little screen really running?
Yes. Each tile is an independent Atari800 emulator. When you enlarge one to play, the background machines pause so the selected game gets the Mac’s attention.
What happens when a game gets stuck?
FujiGrid watches for motion, self-test screens, failed boots, and missing video. It retries troublesome files with alternate Atari 800, XL, XE, BASIC, and 5200 profiles before excluding them.
Will it make a racket?
Sound starts muted. Hover over a tile to hear just that machine, or toggle sound for the wall. FujiGrid mutes itself whenever it is not the active app.
Hey, I found a problem! I found a bug! Something isn’t working right. I have an idea!
Yeah—this is beta software. I told you! Please email bug reports to kay at savetz dot com. Ideas are welcome too.