It's a regional lockout/region coding of DVD's and Video Games have their own region number.

CD's are the only ones that don't have regional lockout/region coding.

2 years ago in 2012, my friend want me to buy him Monster Hunter 3 all the way from Japan, it takes 1 month to come, and it's Region 3 (Japan/Asia) and it works.

Region 0 is World Wide and it's Region Free.

I've try it on my PlayStation 3 if it works, but my PS3 is not only Region 1 (US/Canada) and any other PS3's that people have, it's Region 0, which means it plays all different regions.

I remember buying a Region 2 (UK) dvd and it didn't work on the dvd player because it's region 1.

I watched YouTube videos of other game consoles and game handhelds.

Videos I've seen, Nintendo 3DS is region free, but the PlayStation Vita has to get another memory card to play Japanese games, because the memory card you still using will sync with USA account, and it will get banned if it's an account that's from a different country region, the memory card has to stay with it's own region, unless you can format it to erased the whole thing on the memory card.

PlayStation 4, Nintendo Wii, Nintendo Wii U, Xbox, 360, and Xbox One, don't know if they got region free, old consoles like PlayStation 2 might have it.

I made a Japanese account on Yahoo and it's for my Japanese PlayStation Network account on my PlayStation 3, so I be able to play Japanese games.

And the Japanese games still works on my USA account on my PlayStation 3, but they are Japanese demo games, and my USA games works on my Japanese account as well.

Like my Grand Theft Auto 5, I haven't seen anybody online from Japan yet, well, some of them, I think and I believe.