Well. The game is really COOL. I would like there is more games with such quality. But I just dont get it. In physics research the is technology metamaterials. Telling me that it allows me to build 4 more levels... So... I spent some hours and think I searched all I could to find this option, some button on keyboard, in game interface, some buildings in decoration, in other rooms, anything. So... Just can someone tell me? How the fuck I can build another stages or there is no that option in the game, or this option is something else (like more area in one plane, not 1,2,3 etc. stages) and I just don't fully understand meaning of it?