Dubai’s new mega-indoor theme park, the $1bn IMG Worlds of Adventure, is now 80 per cent complete with final testing of rides ongoing, the park’s chief executive officer has said.  In an interview with Gulf Business, Lennard Otto confirmed that it was on track to open in early 2016.  Set to become the world’s largest multi-brand indoor theme park when it opens in 2016, IMG is spread across 1.5 million square feet – the size of 28 football fields.  It will feature four zones including The Lost Valley – Dinosaur Adventure zone; Marvel and Cartoon Network zones; and IMG Boulevard.  Along with rides and attractions, it will also feature 25 retail shops and 28 food and beverage outlets.