[Alpha]

It's a Mass Multiplayer Online First Person Shooter being developed by Bungie. The basis of the game is that you play as one of the defenders of the last great city and refuge of mankind on Earth after a great catastrophe which the city was protected from by "The Traveler." As the defender you venture forth and explore the now unfamiliar environment and the areas once held by mankind.

That's about the best synopsis I can give off the top of my head (too lazy to look it up at the moment). Here's the website for the game though: Destiny