It is important to clarify the terminology. A literal port of the Wii game to the DS hardware is technically impossible due to the massive difference in processing power between the console and the handheld.
If you're interested in ROM hacks for "New Super Mario Bros." or similar games, here are some general features you might find in such hacks: new super mario bros wii ds rom hack download
If you love NSMB DS ’s clever mini-games and NSMBW ’s sprawling co-op levels, Delta is the ROM hack you didn’t know you needed. Just bring your own ROM, patch responsibly, and prepare to have your muscle memory broken – in the best way possible. It is important to clarify the terminology