The Best 3DS eShop Titles No One Seems to Know About

I didn't realize how many games the eShop has until the other day when I was searching for a particular game. Suddenly, my search results retrieved a bunch of titles I had no idea were available to download. I also noticed on a Polygon news article somoene mentioned that Galaxy Force II was available to download, a game that I instantly knew I'd love but had never heard of and had never seen on the eShop.

So, I turn to my fellow Polynauts to ask one simple question:

What seemingly hidden eShop titles should I be buying? All suggestions welcome!