This neat little IQ Test is a quick instant gratification (or disappointment!) IQ Challenge that's surprisingly accurate. We tested the results against a full-on 'official' IQ test that you send off to experts, and were pleased to see that the results differed by only a couple of points. Considering that IQ tests typically vary by anything up to 6 points either way, we were truly impressed. Coming in a compact little box, it takes just 45 minutes to complete, and comes with full instructions, and an answer and score card, so you don't have to wait long to find out how bright you really are. A score of 130+ will put you in the top 2% of the country's population - so that's something to aim for!