Kim Dotcom, has a message for the United States government: game on.

In his only interview on Australian television, the controversial Mega founder tells SBS Dateline's Mark Davis his defiance when it comes to America, and how he plans to fight all the way.

“They came into my life and thought they can destroy me and kill me," he said.

"They picked the wrong guy, cause I know how to fight back and I’m going to fight back effectively, and I will make them regret what they have done.

David joined Dotcom at his New Zealand home where he is fighting extradition to the US on copyright, money laundering and racketeering charges over his now defunct file-sharing website, Megaupload – charges he claimed are just part of the US government’s attempt to control the internet.

“What this really is, is a war for control over the internet," he said.

"The internet is a new world and, you know, you want to make sure - the US government wants to make sure - they have control of this most powerful market place of the future,

“The internet belongs to nobody - no man, no corporation, no government - and that’s what these people need to understand.

"The internet is there for everybody, for society to evolve faster, to share knowledge and to accelerate our development as a race,” Dotcom tells Davis.

Despite the legal might trying to stop him, the 39-year-old, born in Germany as Kim Schmitz, is fighting back.

“Mega is not just a business," he said.

“It’s a belief and it’s a mission. It’s a mission to give their rights to privacy back.”