The Rune Factory harvest moon games also let you fight and keep monsters ;3 So it's kind of fun. You can manage without planting that many crops once you can mine in dungeons~
Let's see...
I second TWEWY- it's an rpg with a pretty cool storyline and really fun battles x3
A lot of people like Disgaea, but it's a lot strategy so I got bored |D
I hear Bleach: Dark Souls is good?
Pokemon Diamond/Pearl is a must-play D8 Unless you dun like pokemon.... Also Pokemon Explorers of Time/Darkness is cute and has a pretty neat plot 80 It made me cry ;w;
Legend of Zelda: Phantom Hourglass is pretty good, but really short, so I'd only borrow it :x The story isn't so good but it's fun to run around killing things |D
Super Mario 64 is funnnn 83 Even if you have the N64 version~
Oh and I can't forget Animal Crossing, a classic. If you didn't like the first one though, you might not like this either :x
I hear the Phoenix Wright games are good, and they're really popular due to memes O3o I haven't played them yet, though. And Chrono Trigger (Ithink?) gets good ratings, some people say it's better than TWEWY, but I haven't played it yet either.
Annnd yeah. Some multiplayers that're fun are mainly the Mario Party Games, Mario Kart DS, and Zelda Phantom Hourglass xD Though I haven't played many multiplayers... For those only one person needs to have the game though.