Nintendo tumbler puzzle Nintendo tumbler puzzle The Nintendo tumbler puzzle, also known as the "Ten Billion Barrel" in English and originally in Japanese, is a mathematical puzzle in the style of Rubik's Cube. It was invented by Gunpei Yokoi of Nintendo in 1980 and was covered by (until the patent expired in March 1995 due to non-payment of a maintenance fee). It consists of a "cylinder" of transparent plastic divided into six levels, together with a black plastic "frame". The frame consists of upper and lower discs that are joined together through the middle of the cylinder. The top and bottom levels of
Agent A: A Puzzle in Disguise title was ‘Snowy Village’ with the art style more based on Fire Maple’s "“The Lost City”" with the same mechanics as the final version. The art style was then changed into a more appealing theme that not only rooted from developer Mark White’s own preference for the secret agent theme and his love for the Bond films, but fit accordingly to the mechanic of finding hidden clues and objects. The iOS version has received “generally favourable reviews” according to video game review aggregator "Metacritic" Agent A: A Puzzle in Disguise Agent A: A Puzzle In Disguise is a suave secret