Never played the first Dead Space but considering picking up the sequel? Best catch up with the story then; see above for a narrated 4-minute look at the entire universe’s premise as well as a run-through of the events of the original 2008 title.
Our suggestion would be to actually buy and play the first game though. There’s time yet, the sequel isn’t out for another month (January 25, 2011 in North America, Europe on the 28th).
Those looking to completely ruin the just-released demo for themselves (out now on both Xbox Live and PlayStation Network) can find a second video below. It’s of the tips and tricks kind.