** FILE ** This undated image provided by Amazon.com shows the so-called Prime Air unmanned aircraft project that Amazon is working on in its research and development labs. (AP Photo/Amazon)
ADVANCE FOR MONDAY, APRIL 28 AND THEREAFTER - Winona, Minn., graphic designer Jose Pelaez, seen in an April 9, 2014 photo, created the game "Cards vs. Dice: Strategically Lucky," which sells on Amazon.com. (AP Photo/Winona Daily News, Andrew Link)
Screen grab from Amazon.com.