I once wrote a game with no graphics or sound. It was a maze game: you were supposed to lead a mouse cursor through an invisible maze by touch. If you drive you

I once wrote a game with no graphics or sound. It was a maze game: you were supposed to lead a mouse cursor through an invisible maze by touch. If you drive your cursor into a wall, it stops. You start at the bottom, and if you manage all the way to the top - you win. Well, it's not completely useless. If you're extremely bored at work and don't want to draw attention, this could be your time waster of choice.