Bight Games, the developer behind the iPhone and Facebook freemium hit Trade Nations, has become the latest studio to be purchased by Electronic Arts.

Bight has already worked with EA as a partner in the past, but the acquisition ensures that EA will be putting an increased focus on the ever expanding freemium mobile space.

“The freemium game model in mobile is here to stay, and it’s growing fast,” the company wrote in a blog post. “With the proliferation of choice in games and lessons learned from other platforms, consumer expectations are changing from early days where pay-per-download games were the de facto standard.

“Freemium games give players the flexibility to control more of the game – how fast they progress, how much and how often they want to spend to enhance their experience. The Bight team will help us to bring more freemium games to our chart-topping lineup of mobile titles this year.”

While Trade Nations has struggled somewhat to gain a large audience on Facebook, it has regularly been one of the top-grossing apps in the Apple App Store.

The announcement comes a little over one month after EA announced its acquisition of Popcap Games.