I think that the developer tried to teach us a lesson: how difficult it is to build enough elevators to keep customers happy. So, in order to help them, we need to start using the stairs. We'll be in better shape and we'll fight this freaking elevator abuse.
Excellent game! Very entertaining and challenging. The music was very good, the game was simple but very enjoyable. An amazing sequel, keeping with the spirit of the original game, just improving it. And the AI difficulty was a good addition. Thanx for this!