https://info.sonicretro.org/Sonic_the_Hedgehog_(8-bit)/Maps Sonic 1 Game Gear is done, which took quite a bit of time to do since Sonic Extractor 8-bit got all the palettes wrong and had to go about correcting them to what the game actually uses (Labyrinth Zone was the worst to deal with). While the default positions were all extracted from internal data, corrections had to be made to show the approximate object positions as seen in-game (i.e. what the player should be expecting to see in normal play). One very interesting thing I learned through this is how the tool showed a Spikes Badnik placed a little underneath the floor in Bridge Zone Act 2: At first I thought the tool was joshing me as the Badnik never appears in normal play, until I discovered that it DOES exist! Because of its weird placement, the Badnik ends up falling beneath the level boundaries, and the only way it can be seen is by using an emulator to display the areas outside the Game Gear's screen limitations, where the poor thing can be seen milling about in the garbled void: I've got this documented over on this page: https://info.sonicretro.org/Sonic_the_Hedgehog_(8-bit)/Hidden_content#Misplaced_objects I suppose you can show what you've done, and if you want to, you could make better maps for Mania Plus to replace what's there, which also brings me to the next thing I want to share: https://info.sonicretro.org/Sonic_Retro:Todo/Maps A checklist of what maps are wanted, what maps need improvements, and which games could do with chunk/block rips.