Make a videogame in 48 hours.  How hard can that be?  It's doable but... you better not expect to get a lot of sleep!  The game our team made was called "Legend of Morph".  I built and animated the various characters, and 
Rachel did the backgrounds.  Here is a demo of my animations:

The most common comment about Morph is that... he is sort of like a little pink roasted chicken walking around.  Which is very strange, but you know, I kinda think it works.