Sony Computer Entertainment (SCE) sent over a press release announcing that the global sales of Killzone: Shadow Fall exceeded 2.1 million units as of January 15, 2014. The number includes both Blu-ray Disc sell-in quantities and download version sales on PlayStation Store.
The Killzone series, exclusive to PlayStation platforms, covers the conflicts between the Interplanetary Strategic Alliance (ISA) and the Helghast Empire. Killzone: Shadow Fall introduces a new chapter of the saga on the ISA's stronghold, Planet Vekta. You play as Lucas Kellan, an elite soldier/intelligence officer of the Vektan Government who faces various challenges to stop the terrorist group Black Hand from destroying the planet.