D3Publisher said Wednesday that its Cartoon Network licensed title Ben 10: Protector of the Earth has sold 2.5 million units worldwide.

The multiplatform game, now selling for Kris Graft9, launched just over a year ago on October 30, 2007. It was the first Ben 10 interactive game, and is available for Wii, PS2, DS and PSP.

D3P released a follow-up on October 28 this year, titled Ben 10: Alien Force The Game. The new title retails for $39 on Wii and PS2, and for $29 on DS and PSP.

“We look forward to even greater success with the recently released sequel," said Yoji Takenaka, president and CEO, North America and Europe at D3P.

The Ben 10 Cartoon Network series revolves around a 10-year-old boy who finds an alien device that grants him superpowers.