The Gameplay can be seen here http://www.youtube.com/watch?v=T-hspVTgUOQ
Game: The Nanonaut
In a future not far from here, the humanity is fighting an old enemy, Obesity, much faster, much stronger and much clever. The human scientists in order to prevent Obesity's domination, created an order called Nanonauts, young soldiers with technology capable of entering human bodies and retrieve body fat an other bad things in order to save them. In the game you play an young Nanonaut rookie, fighting the Obesity's most evil enemies and soldiers.
Bigger Picture: The game touches on a political, environmental or social issue.