2015 over, and so is the mobile games market.
Just kidding. Mobile games are stronger than ever.
Granted, some interesting trends came out of last year - like paid apps gradually finding themselves unable to compete with free-to-play games - but we can expect 2016 to begin the way 2015 ended: With tons of mobile games to choose from on the App Store and Google Play.
2016 will also usher in Nintendo's first stab at mobile game development (outside of some Pokémon apps that are more the work of the affiliated but still somewhat independent Pokémon Company).