Camping Mama: Outdoor Adventures, besides being ripe for parody as a first-person shooter, is a wholesome game about the wonders of the great outdoors. At least, it's about the theme of the outdoors, loosely. The camping themes here seem a bit more Japanese than American. Here, campers are looking for chestnuts and trying to catch rhinoceros beetles. Well, you do get into more "American" camping activities like roasting s'mores as well, later on. Naturally, the only way to do these things on the DS is with mini-games - loads and loads of mini-games.
So that's pretty much the game. There's no grand story to this whole thing, but apparently doing things as simple as gathering firewood are a huge adventure in themselves. About half your time is spent navigating the map in an overhead view. You'll dodge nefarious monkeys in order to gather things like firewood and bring them back to camp. Apparently you came with no food or supplies either, but luckily there are forest tomatoes (yes, apparently) and other delicious items you can also gather. So you run around, gather things, and get into mini-games, and that's about it.
That makes things sound pretty dull, and honestly, the games in this series were never meant to be intellectually stimulating. Camping Mama: Outdoor Adventures is basically a fun little time waster. You'll do all sorts of things in the mini-games, and they do vary a bit in their small details, but overall it's going to be "chop this" or "collect that". You can get items, but they really just serve as trophies. You're not really building a camp at all here, just playing mini-games (sorry Mama).