The final installment of the IQ series, The Revenge of the Einstein, includes some of the most difficult block puzzles ever created in a Zelda game. The already existing puzzles from the IQ and Conker, which were considered to be of a better design, were used in this game and remodeled to be even more difficult, yet some rare puzzles are brand new. A very short hack with very difficult riddles, which will test the limits of your intellect, while still being beatable if you invest enough time into solving. The hack also has some “breathing rooms”, in which you don’t need to think much to proceed.