Silliness vs Seriousness, How much is too much? Options

[Shaddow]

So, I'm writing a game that is rather silly in dialogue and overall plot, but I still plan to make it a full game with seriousness happening. I like to think that I have a good balance to it, but that leads to my question.

How far can you go in silliness in a game before it becomes a silly game and loses all credit?

[Lato]

No such thing as to silly I say, in fact I think that a balance of silly and seriousness is the problem, when I enjoy a game I like it to either be all serious or just off the walls silly, a mix of it just seems really grey and boring to me.