A bit surprised to see this on here. I've followed the Newer devs for quite a while and they're pretty good at what they do. This is a mod for New Super Mario Bros. Wii, as the title implies. A lot of work definitely went into it, which can clearly be seen through the various new enemies, worlds, levels and the addition of a new power-up. Newer Wii is significantly more difficult than the original game, clearly meant to be a mod created for more hardcore fans of the series. I myself found it sometimes a bit difficult to complete, but I liked it. It was about what I wanted from a New Super Mario Bros. game, albeit with a few bugs and missing quality of life changes.