Board Thread:Tips, Tricks, and Questions/@comment-203.77.246.83-20131017095516/@comment-21492862-20131018082907

Of-course you can. Just visit the PVP area both, press yourselves and press the door icon in the bottom left. There you can see in what 'virtual world' you are. If you go to the same one, you can battle each other.

Good luck!