Plot: Pou is a virtual pet game for BlackBerry 10, iOS and Android developed and published by Lebanese designer Paul Salameh. It is somewhat similar to Tamagotchi, a fad game that required caring for a simulated creature. Wikipedia
Plot: My Talking Tom is a virtual pet app released by Slovenian studio Outfit7 in November 2013. It is similar to Pou and the fourteenth app of the Talking Tom and Friends series overall. A similar app called My Talking Angela was released on December 3, 2014. Wikipedia
Plot: Coin Master is a free, single-player, casual mobile game created by Israeli studio Moon Active. It has had over 100 million downloads. Coin Master is the top-grossing mobile game in the UK and Germany. Wikipedia
Plot: Hay Day is a freemium mobile farming game developed and published by Supercell. Hay Day was released for iOS on 21 June 2012 and Android on 20 November 2013. According to a 2013 report, Supercell earned $30 million a month from Hay Day and Clash of Clans. Wikipedia