You might think, "Could a hacker convert New Super Mario Bros. U to run on the Wii?"
No. The Wii has 88 MB of RAM (total). The Wii U has 2 GB of RAM. NSMBU features HD sprite work, complex particle effects, and save data structures that the Wii’s 729 MHz processor simply cannot decode. While homebrew developers have created incredible custom Mario games (like Newer Super Mario Bros. Wii), a full port of the Wii U title to the original Wii does not exist. New Super Mario Bros U Wii Roms For Wii-
To understand why this search fails, you need to look at the history of Nintendo’s hardware. You might think, "Could a hacker convert New
The cold, hard fact: The Wii U is not the Wii. You cannot put a Wii U disc into a Wii console. Likewise, a Wii U game file (ROM) is encrypted and compiled for Wii U hardware (PowerPC 750-based, but with a completely different GPU and memory architecture). The cold, hard fact: The Wii U is not the Wii
Because the Wii U was not natively backward compatible with Wii U games, playing New Super Mario Bros. U on a standard Wii requires unofficial modifications.