It's called Rune Factory Frontier, it's basically Harvest Moon with dungeons and a stuffload more things you can do then in the current harvest moon out on the wii.
http://www.metacritic.com/games/platforms/wii/runefactoryfrontierYou do not need to play the first 2 DS games to play this, if anything it barely even accounts for what happened in those games, probably out of shame about how stupid the storylines in both games were.
The point of the game is get money, forget bitches, rule everything. You're a farmer and you start out with your own little hood and farm that's completely forgeted up (ala harvest moon). You tidy the place up to your liking and get around making some moolah whichever way you want. Eventually (rather quickly) you get access to dungeons filled with monsters which you can conquer. The game boasts things like marriage (ala harvest moon), being able to tame and take home monsters which are basically your traditional harvest moon animals, features a pet system where you can bring whichever monster with you on a tag team adventure, trades like forging and cooking, as well a bunch of other events and things to keep you occupied to no end.
It is NOT a party game, but it's still very good nonetheless. I saw my sis play it while I was studying and, although it has allot of creepy anime stuff and whatnot (forget you Japan), the gameplay is solid and fun enough to get past all that. The gameplay is kind of like a dumbed-down action RPG with 3rd person overhead view.
Metacritic gives it a green flag and it might be the first solid game for the wii to actually keep people occupied beyond 20 hours.
If you like games like say Harvest Moon 64, get this game definitely. I can promise you won't be disappointed.
Also the game intro is loving weird, I know. Blame Japan.
