Infamous: Second Son crossed the million-sold milestone in just nine days, Sony has announced.

That makes it the fastest-selling Infamous game yet, and one of the biggest games on Sony’s new PlayStation 4 console.

Second Son takes the franchise in a new direction with a new protagonist and setting, and also expands the player’s powers.

Sony has also supported the game post-launch with a free episodic storyline called Paper Trail, which adds six free missions to the game, the forth of which is out this week.

VGChartz estimates put total sales of Infamous at 2.75m and Infamous 2 at 1.66m.