OLPCities/Using the Time-Space Portal

Many of the residents of the OLPCity (it's the case of our heroe, the avatar, you...) works for the "Time-Space Inc." This company developed the "Time-Space Portal" for travels in the time and space.

The Portal is used to go to some place/time of the past and is the "support" for many activities of History. Going to some place in time, the kid needs to enterview all the characters at the Lot to know how they live etc. etc. The company only send a new Portal for the return when the kid ends his mission.