According to Jem Alexander of PS3Fanboy,
"We were given a pretty in-depth walkthrough of the current state of Home, including a couple of game spaces (images of those later), during which we asked the bloke as many questions as we could think of. Top of our list? Making sure that we would be able to meet up with our friends all across the planet in the various public spaces. Unfortunately, this is not the case. Home's public spaces are going to be region-specific.
If you want to meet up with your pals from abroad, then you'll be able to invite them into your apartment, but warping into the game space to bowl or play chess is not possible. This is allegedly to make sure that each region receives an "experience most suited to their tastes" as well as, no doubt, to keep advertisers happy. The last thing they want is Europeans seeing an advert directed at Americans."