Temple Run
Husband-and-wife team Keith Shepherd and Natalia Luckyanova, along with artist Kiril Tchangov, created the hits Harbor Master and Temple Run. At first, the game was released for 99 cents, but soon enough they released Temple Run free, but with purchasable in-game coins. This made revenue multiply five times with in game coin purchasing.  Both Shepherd and Luckyanova made the game, while Tchangov made the pictures.