Mike Mika has a young daughter who liked the fact that you could play as the Princess in Super Mario Bros. 2. So, he created a special mod of the classic game Donkey Kong where Mario needed to be saved and the hero is Princess Pauline.
The modified ROM is apparently constructed from the version of Donkey Kong from 2010 for the Nintendo Wii game console, though it looks like the vintage game from the 1980s. Mika used Tile Layer Pro, which is a popular ROM editing tool, to put Mario on a pedestal while the Princess tries to save him.
See the mod in action: