A new PS4 promotional video reveals users can choose to either download the single-player or multiplayer portion of Killzone: Shadow Fall first when downloading the game. The vid, which shows off the console's interface, uses the example of a Shadow Fall player pestering his friend to play the game with him ASAP. We doubt Shadow Fall will be the only game with this feature on PS4, but the extent of its implementation remains unclear.
The video also explores the idea of clan-based flirting for the hip, young, and cool, but we'll leave that for another time. Slightly more notable, perhaps, is the apparent ability to seamlessly switch from things like the PS Store and watching shared videos to going back to the game you're playing, demonstrated in the vid via a double click of the PS button.