that's totally crap. I can't find any system behind the value of the cards. So, i guess, it's actually totally random. But than - yes, there are 20 cards with the value 5 so 100 points can be reached, but only if you don't make any "mistake". Talking about the mistake flipping a -5 card - since there is no way to predict the value of the next card you can't make a mistake. it's just having luck. Statistically spoken 100 points is possible but will never be reached. 1 Star because the "game" works.