I work on a game creation company and this week the administration decided to give us a challenge, to make a game. Using whatever tools we want to whatever platform we like.
After we got divided between 4 teams the challenge was to make every minute count. My team got composed by me (programmer), a designer and a person from man resources. Of course I was going to handle every bit of code, the designer the art and the third person the level design and documentation.
We came up with a platform game called Cloud9 in which you have to return a star to the moon. The star has magical properties and can use the 4 basic elements. 
Meanwhile the week went by and this is the last day. I spent most of the day building the level editor.