: Zach Gage's one-man indie iPhone and iPad word game SpellTower
sold more than 20,000 copies in the space of two days, following a huge social and marketing push from the developer.
Gage halved the price of his highly-rated game for 48 hours, and revealed it subsequently saw 21,576 copies sold
in two days, compared to the 61,987 copies that were sold during the five months prior to the sale - showing the verticality of the sales curve approaching the top of the iOS charts.
The game also climbed into the various top 10 charts on iTunes, reaching number three in the U.S. top paid iPad apps chart, and number 10 in the U.S. top paid iPhone apps chart.