How's your Sunday going? This week has seen the year's biggest fad develop  - No, I'm not talking about the excitement around Kabali . Instead I'm talking about Pokémon Go .  So this weekend's GK nugget is about this augmented reality game that is making people run around their neighbourhoods with their smartphones held high. First up, what is Pokémon? Pokémon is the name of a game released by Nintendo 20 years ago . It's a cult classic and led to many video game sequels, TV shows, movies & merchandise being sold. So why the excitement 20 years later? Nintendo has added a new twist to the game, using new age technologies which are easily available in smart phones (cameras, GPS & augmented reality capability) . So now people are downloading the app on their mobile phones to play the new version - Pokémon Go . And what's so different about the new version? When you start the game, Pokémon Go  uses your smart phone's camera ...