This is a puzzle game made with loads of love. Entertaining and quite soothing, it gets new modes and challenges quite often. Recently they added a sort of "Find Waldo" mode with a giant, animated and beautiful canvas where you search for different items. Loved that one.
Amazing sound quality and marathonic battery life (seriously, this thing gets around 40 hours per charge) make for one of the best BT headphones for office use. Noise cancelling isn't on par with pricier options, but for the price (around US$70 paid) there is no better choice.