The man was arrested in Poona, Queensland by the Queensland Police Fraud and Cyber Crime Group, who allege he stole information from the US company's databases and sold it online.
Police also allege the man hacked the game company's Twitter account and posted confidential information and screenshots online.
An encrypted container on a computer device was also seized at a Poona property on Wednesday, and officers say the FBI and the US company helped with the investigation.
The man has been charged with multiple counts of computer hacking and misuse, fraud and property offences.
"What this guy allegedly did was set up his own website where you could purchase or get access to the IP addresses of other players," Detective Superintendent Brian Hay from Queensland Police's fraud and cybercrime group told Fairfax.
"The idea [of selling IP addresses] being that you can facilitate a denial-of-service attack on opponents and slow down the speed at which they can play the game."
Detective Superintendent Hay said he couldn't name the US company that was attacked, but said that it would be revealed in court documents on April 8, when the 21-year-old Kingaroy man fronts Maryborough Magistrates Court.
Hay also told the media outlet it was one of the first known cases in Australia where denial-of-service had been used to attack home routers.
The hack is the latest in a long line of recent attacks on user data however, for example a Melbourne schoolboy allegedly hacked the Public Transport Victoria website, and crowdfunding website Kickstarter was the victim of a massive hack just last month.
The man is due to appear in the Maryborough Magistrates Court on April 8.
iTWire has contacted Queensland Police for further details.