If you see Star Citizen in headlines, its because it's passed yet another million-dollar crowdfunding milestone. But developer Cloud Imperium Games today released a primer on the game's universe, dilineating between its singleplayer campaign – called Squadron 42 – and its massively multiplayer online component – Star Citizen.
This video opens up with some needless "PC Master Race" chest thumping, but moves on to touch base on some of the cogs that will make Star Citizen turn. Disregard some of the time sensitive stuff Chris Roberts mentions, like player vs. player dogfighting happening by December of last year (it hasn't happened yet).
Star Citizen estimates a 2015 release date on PC.