A map I made in the span of 24 hours, based on Chemical Plant Zone from Sonic Generations. Contains both the Classic & Modern music tracks, as playing a fast paced shooter without music just seems weird.
The main gimmick of this map is the few areas with water in them & the moving platforms, with two switches in the map that can reverse the direction of the platforms.
(Does this count as a port on the Whitelist? As the geometry is completely original, but the assets are from another game entirely.)