Looks more like Nekketsu Kakutou Densetsu to me:
http://www.youtube.com/watch?v=DMEnqPpHoZI
I only hope that there's bosses and stage hazards. Otherwise, this will be something of a slight step back from an NES game... That said, the option of DS download play is pretty cool of them. However, the fan game based on the Kunio-kun entry above seems way better:
http://www.youtube.com/watch?v=EWml71Fpfv4
Not a bad effort on their part, just wish it was, well, better done.

I don't know how many people here know about this tidbit, but this game is actually a sort of homage/spiritual sequel to one of Compile's last games, Guru Logic Champ, which was made for GBA. It played similarly to this, but there were various scenarios featuring duck-like critters, known as Champs, who were often in trouble. It was up to the player, who controlled a pair of studly Champ brothers and their tile-shooting cannon, to solve puzzles and gain access to the item(s) that would help out those in need. It was much more lively than this game, although the core gameplay carried through well, and I'm glad Snapdots finally came over here. I'd encourage anyone who liked Snapdots to track down Guru Logic Champ somehow, possibly a second-hand import store, especially since you don't need to know much, if any, Japanese to play and enjoy it (due to many scenes not involving speech or text).

Last time I got excited for an in-game mentioned sequel was Neutopia III.

Come on, Hudson. You're two decades over due.

Hero of Sparta was pretty fun for it's low price on PSP. I wonder how the DS version stands up, especially considering it costs a good 3 bucks or so more.