Here are some interesting bits I picked up this morning:
In terms of game play the game sets few, if any, goals: the major one is merely "survive". What goals a player sets, are often astonishingly tedious to actually achieve, and power-ups and gear upgrades, let alone extra weapons, are few and far between. Some players choose accumulation of money, one of the many point systems in the game, as a goal, but distribution of this is often randomized and it can be hard to tell what activities will lead to gaining points in advance, and what the risks will be.
It's a neat idea. If you have a game and want to see a rating quickly, this can be a good way to get a synopsis quickly. I don't even think there is a system to do so for movies, but drop me a line if I'm wrong about that.
Here it is in action: