US game Wifi in EU - Will it work?

I know this sounds kind of n00bish, but it's bothering me.Is it actually possible to connect to others using a US Game/Rom in EU?Thanks.

I download U or E whatever comes first have had no problems with wifi....so guess the answer is .. it dont matter....

Wi-fi is global so long as your near an internet connection
A lot of people play Japanese games from the U.S

Well, the rom connect to any WiFi also to Korean. So this is won't a problem.