Just an update for everyone, the theme has been announced and the jam has started. Here's an excerpt of the announcement email.

Welcome to Game Off—our 5th annual game jam celebrating open source. The theme for this year’s jam is throwback.


Let your imagination run wild and interpret that in any way you like, but here are a few possible interpretations for inspiration:


a reversion to an earlier ancestral characteristic
a person or thing having the characteristics of a former time
a nostalgia for something in the past (fashion, movies, literature, games, technology)
something retro—a blast from the past
something passé—no longer fashionable or popular,
throwing something back—as in a ball or reply