Guesstimate: a free general knowledge game with no ads! Get as close to the correct answer as possible to try to score as many points as possible. Guesstimate is an original general knowledge quiz game that will allow you to learn new things while having fun. HOW DOES IT WORKS? You are given a series of 6 questions whose answers are all numbers. For each question, the goal of the game is to give an answer that is as close as possible to the correct answer. The closer you are to it, the more p