Quest Of Ezra is a platformer about society and personal sacrifice. You play as Ezra, who has recieved a letter from "Sociey inc.", telling him to collect a large sum of money. You guide guide him through the physical sacrfice he is going to have to make in order to pass the 50+ levels on his path to Society inc. In Quest Of Ezra you use spikes to lose mass, and saws to launch you through the air.
Just a quick snippet of video, taken from the website.