You can have as many dogs as you want with dogz. But you can only have two out to play at once. There are 4 special places to play, an island, a circus, a western town, and a beach, but they are just backgrounds basically. You can play in several rooms in a house and make your own custom rooms. I agree it does get boring sometimes but there are endless things to do. I used to breed them all the time. I bred a basset hound to a lion and the "puppy" was just adorable. This is just one of those games though where if you are bored you might sit down and play for a bit, there's no real point to it. I actually liked dogz 1 better because the dogs seemed to have more personality and you could watch them grow, in the later games they packed so much stuff into it(toys, clothes, breeding ability, different rooms) that it seemed to me that they forgot to add the breeds personalities to the game and the fact that the dogs grow from puppies to adults is downplayed.

You also have to buy a nintendo ds for nintendogs. I really don't like the handheld game systems with their tiny tiny screens and tinier graphics. If I want to play a game I want to be able to do it without squinting. I suppose one could hook it up to the tv but I still don't get the point.