Minecraftmay be the most-sold video game on Earth, but it's very different from its fellow chart-toppers. It has basic graphics and no narrative – and yet it's captured the imaginations of over 100 million players. But how has this indie game become a global phenomenon?

Google's mobile app 'Ingress' is a game played in the real world. Players use their Android phones to look for clues and codes in their environment in order to find virtual portals and coordinate attacks with other players.

From December 2015 onwards, people will be able to access the internet on their smartphone throughout Europe for no extra charge. It presents a huge opportunity for tourism apps, and Gamar is positioning itself as a key player in the London market.

2015 will see an avalanche of virtual reality devices appear in the mass market, with the likes of Sony, Google, Facebook and Microsoft targeting gamers across the globe. The technology may now be an attainable reality, but will it be used for anything beyond video games?