Move all passengers to the correct destination overpass all handicaps of the environment.
Remember, passengers patience is limited, everything should be done fast and clean, also price for space fuel is high.
In the game you will face as a single trap and barrier as a combination of them that organize logic puzzle. Only after player will find correct solution for it he will be able to complete all tasks in time.
The levels are organized not only on different locations but on different planets which change Bobs point of view of his major task. During Bobs journey, between levels, the player will be able to track the history of Bobs space love.