Corpse Party: Blood Drive

If you haven't played the first game yet, I'd recommend going and doing that before you even consider this one. You will be utterly lost without it. After that, I'm not sure what to say. You could jump in on this admittedly good version of a decent sequel knowing that you're going to have to sort out the confusion of the missing plot elements from Corpse Party: Book of Shadows and completely spoil the plot of that game should it ever come.