A simple utility for extracting Zone layout maps from Gens savestates of Sonic 3 and Sonic & Knuckles in BMP or PNG format.
Foregrounds, backgrounds, objects, and palettes are all supported in the latest version.
You can find a 7z archive of useful savestates on the Resources page.

Version	Size	Download
1.2	2.2mb	download
1.1a	2.2mb	download
1.1	3.3mb	download
1.0	3.3mb	download

Version 1.2

            Added the ability to choose between the original Sonic 3 alone object layouts and the modified Sonic 3 & Knuckles object layouts.

Version 1.1a

            Added the ability to view and export Plane B (background) layouts.
            Fixed a bug when exporting maps while Zoomed in.

Version 1.1

            Added the ability to use the underwater palettes.