Here is a fantastic simulation game called Electrocity, that brings together many of the things you would have learnt about in the People's Planet topic. In this game, you try to grow a small village into a thriving city. But you will need to watch your energy management, pollution, and of course you will have to try and keep your citizens happy.
Here is a little screencast I have made that explains how it works.
After you have watched the screencast, go to:
Today we are going to have a go at a simulation game from World Vision.
It's called 'Born to be Free' and is about freeing children trapped in different forms of child labour.
You act as a World Vision worker and help the children and their family make decisions that lead to a freer and fairer life.
Watch this video to understand how to get underway with the game easily. A link to the game is at the bottom of this post.