The image is exactly 256GB. If you flash it to a 256GB microSD card (like a SanDisk Ultra or Samsung Evo Select), you will have zero free space for save states or new ROMs.
While 64GB and 128GB images exist, the 256GB version is the "completionist's" build. It moves beyond the NES/SNES/Genesis era into the disc-based consoles that the Pi 4 handles uniquely well. Damaso 256GB Raspberry Pi 4 RetroPie Backup Image
Save configuration. You’re now ready to play. The image is exactly 256GB
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