In some countries it is already downloadable in the final version. In some others, like Germany, it is still in the early access phase. Nevertheless you can test it extensively.
Like in pokemon go, you have to go out and visit locations via GPS. There you can get different things like stones, plants or animals. You can then use these for your buildings.
A lot of space is needed
Sometimes it is not easy to keep an overview and you need a lot of space, in narrow alleys it gets difficult, but maybe soon there will be adaptable sizes or certain game modes.
For appartments there are ready-made buildings which can be set up. These are much smaller and even fit on the nightstand.
However, it can take quite a bit longer until you have your own stones and more at your disposal – this can be fastened by a payment model. Nevertheless the graphics are as usual and the soundtrack is like from the main games, it fits very well into the real world.
If you want to see a short Lets Play about it, have a look at my Youtube channel.