This is one of those “pleasant surprise” episodes where Jeremy went in expecting nothing and came out impressed by both titles under the microscope.
Namco’s Mappy-Land (published by Taxan for whatever reason) definitely shows its age, but despite being a 1986 release muddling its way onto NES in 1989, it has strong enough central gameplay and smooth enough controls that it holds up well. The City Connection of ’89, if you will. Although the latter portions of the game do hint at a superior experience that could have been….
And Dance Aerobics, well. It didn’t quite invent the rhythm genre, but it certainly prefigured the format. Not especially my cup of chai, but it has a lot more going for it than you might expect from the box art.