Yeah, the GRE is definitely like a game. Unfortunately, there are only a few computer adaptive practice exams available and I'm saving those for the optimum time. For what I'm trying to do, the quantitative sections are the important ones, as in, I need to get 800 on it, which shouldn't be all that hard for me. I've been practicing for a little bit now, and usually I'll miss only 1 problem per 30 questions when I'm careless. But like I said, the practices that I have are mostly paper. You're right, the timing is the most crucial part.