What is Super Mario Bro's Mods?

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Newer Super Mario Bros. Wii is a major ROM hack of New Super Mario Bros. Wii created by the Newer Team. It was released as downloadable content worldwide on 2013. A "newer" definitive version titled Newer Super Mario Bros. Wii Plus (formerly known as Newer Super Mario Bros. Wii Deluxe) is currently being made to celebrate Newer Super Mario Bros. Wii's fifth anniversary.

 

Despite being the main hack of the series, it is not the first to be released. Newer: Holiday Special and Newer: Summer Sun were released in December 2011 and July 2012 respectively, making it the third game in the series by release order.

 

The hack itself is a massive overhaul to the main game. There are fourteen completely different worlds with nearly 100 levels, seven new bosses in each world's towers and castles, and several more additions.