SidOfBee on 27 February 2018
"Impossible" port? Super Mario Bros. 2600 aka Princess Rescue.
https://youtu.be/73TcDWQDFMk
Worthy mentions as far as I'm concerned would be Killer Instinct on the SNES, Doom III on the Xbox, Street Fighter II on the PC Engine/ Turbografx, and Driver II on the GBA.