Had to comment...
I've rated this 5/5 a few times but I thought I'd chime in to clear something up for a few folks. Deus Ex Machina is not just a game, in fact, the phrase existed long before the game existed. I hate when people don't do their research before making comments like that. As per wikipedia:
A deus ex machina (pronounced /%u02C8de%u026A.%u0259s %u025Bks %u02C8m%u0251%u02D0kin%u0259/ or /%u02C8di%u02D0.%u0259s %u025Bks %u02C8mæk%u0268n%u0259/, or day oos ayks mokinah [1] literally "god from the machine") is a plot device in which a person or thing appears "out of the blue" to help a character to overcome a seemingly insolvable difficulty. It is generally considered to be poor storytelling technique.
While the last line is true so far as books and movies are concerned, if you were doing it on purpose (kinda like the ending to this flash video), it works out well. After thinking about it, I thought it was quite amusing.