Famous for his revolutionary achievements, the renowned scientist Nikola Tesla invented a system for unlimited transfer of wireless energy, which was meant to be made available for everybody, for free. Of course, Thomas Edison and the big corporations did not like this, and they managed to stop this innovation from being published. However, Tesla never destroyed the scheme of his invention... It is not widely known that the controversial scientist had a secret hideout in Belgrade where he worked on new technological discoveries for the benefit of the human kind. It has been speculated that his most important work remained hidden at this very place... If you have the skills needed for solving all riddles set up by Nikola Tesla in order to protect his work, you might get a hold of his greatest invention, with which you can change the world!