Hi, our company Squeaky Wheel is interested in joining the jam, but we feel the theme is just too loose:

War Child are looking for casual, fun games to come from this game jam.

A little direction would be appreciated.  The global game jam sometimes uses a word or a sentence for this, you could do the same.

Hi Squeaky Wheel, apologies for the delay in coming back to you! If the topic of a casual mobile game is too broad, you could look at relating your game abstractly to War Child's charity mission. We focus on education, livelihoods and protection for children who are living through the traumas of war. 

Many thanks,
War Child Gaming Team