You're better off selling it now before the game comes out..
If it's shitting, then, you'll lose some profit.
So better off making as much now then later.
Of course, if you wait, the game may be outstanding and your name would raise in value.
GL in finding a seller.
Not sure how much is it though, I don't dabble much in names.
But I do know that not all names suit everyone.
So some will be willing to pay more for that then others.