The Steam version of Zool Redimensioned, a rebuilt port of the Zool: Ninja of the Nth Dimension, has a bonus feature where you can play the original Mega Drive version. The ROM can be extracted very easily: go into the game directory and open the Blastem folder (BlastEm being the name of the emulator used here), then the file should be Zool.md. It is modified from the original game; copyright text has been modified, and all references to Chupa Chups are gone, but otherwise it plays like it should.
The Steam version of Zool Redimensioned, a rebuilt port of the Zool: Ninja of the Nth Dimension, has a bonus feature where you can play the original Mega Drive version. The ROM can be extracted very easily: go into the game directory and open the Blastem folder (BlastEm being the name of the emulator used here), then the file should be Zool.md. It is modified from the original game; copyright text has been modified, and all references to Chupa Chups are gone, but otherwise it plays like it should.