People shit on the Ninja Gaiden Trilogy for the SNES, and they are wrong calling it a low effort port of NES games. But it was the version that I played the most until I got my hands on NES carts and emulators. Going from the SNES port to NES wasn't too different, but 3 had the most differences. For one, the double damage wasn't in the SNES version. At first, I thought that I had a bugged NES cart. But no, that's just the way it was. One other difference was the music. A see a lot of people shit on the SNES remixes, but I know for a fact that not all of them are bad. Not all of them are accurate either. Take this track for this stage in the two versions.

NES: https://www.youtube.com/watch?v=XZegHH3S2wY
SNES:https://www.youtube.com/watch?v=QOdQERSB8iQ