Travel around the world - from your start destination - and untill you once again return to this city.
While in a new city you answer questions about the city, as well as you take a job (e.g. at a farm) and reply questions connected to this sector (e.g. about fruit).
In Backpacker 3 you can travel to 100 places to try answering the 9,000 questions!
Busses are introduced as transportation, you you now have four ways to see the world.
Source: User summary and translation of game box.