So I'm enjoying it, I admit, but also I'm at a point where I have...twelve gnomes, all but two of them satisfied (I'm missing a computer and a gaming console), but also only four houses. I can't figure out if there's something I'm supposed to do to specifically get a house to grow; they just seemed to show up early on. At this point it's just rocks and food and slot machines and nothing new is showing up, really...
EDIT: ok, 12/12, I didn't realize you could plant that, but still only four houses. How do you grow houses?