Click on the name of the level to view the map. To save a map to your hard disk in Internet Explorer, right-click on the link and select "Save Target As...". Then choose where you want to save it.
Sonic the Hedgehog (Mega Drive)
Sonic the Hedgehog 2 Beta (Mega Drive)
Sonic the Hedgehog 2 (Mega Drive)
Level maps take a long time to create, so I doubt we'll see any more here in the near future.