The aim is to collect all of the rings on each level, to help you do this you are able to jump between the seasons. For example, plant a seed in spring it grows into a plant you can climb in summer.
This is the Adobe Flash version of my FBGD 2012 entry. Note that this is not identical to that version, this version is smaller and has fewer levels (currently 5). This is still a work in progress and is missing many things!
This game requires Adobe Flash 10+
If you do not have Flash installed, you can download it from http://get.adobe.com/flashplayer/