There's certainly a hell of a lot of games right now that really need to take themselves less seriously. I remember when tomb raider had dinosaurs and wolves that, when shot from the right angle lay on their backs with their feet pointing up in the air. Now all tomb raider has is a hackneyed attempt to make us emotionally connect with Lara as she mows her way through several hundred human beings as though that makes her a more relate-able character. Games attempting to be serious either need the maturity of writing and execution to back it up or they need to think about returning a little silliness. Sometimes even serious games need a little silliness, take fallout: new vegas that game manages to tackle war, religion, sexuality, extremism and a tonne more huge and difficult topics yet it also has a robot in a cowboy hat and shooting a cult of ghouls into orbit to cite just two of the hundred or more examples. I love that games designers feel they can tackle bigger topics now but they need to remember that a grey palette and depressing characters do not make a mature story anymore than comedy automatically renders a story meaningless.