For Global Game Jam 2015, me and a group of friends made a multi-player competitive adventure game prototype (phew that was a mouthful!) called Follow the Prophet. I made 45 (plus a few assets) illustrations in 48 hours.
Our Global Game Jam page is here: http://globalgamejam.org/2015/games/follow-prophet
And an album of all 45 images can be found here: http://imgur.com/a/lt16D