It’s been known for a long time that warm air is lighter than cold air and rises upwards. In 1783, the Montgolfier brothers flew the first people over Paris in a hot air balloon. We’ve brought a life-size hot air balloon – the first notable achievement in aviation history – to the PROTO Invention Factory. This balloon is designed for a special mission. You must deliver it to a friendly ship. Be careful – you must not fly out of the canyon, or you’ll reveal the secret plan. Using top-secret technology, you can also make the balloon invisible, helping you to complete your mission. You can steer the balloon by tilting your body in the desired direction, and you can adjust the height with a lever.