Is there just one theme?

Yes, all locations all over the world share the same theme for the jam.

I want to know the theme!

The theme is announced at each local jam site after 17:00 local time on Friday. Time zones from New Zealand to Hawaii are all participating. As we aim for all jammers to have the same experience we ask everyone to keep the global theme a secret until the last region (Hawaii) starts. We announce the theme on our website and social media after Hawaii has joined the jam. For themes from past years, see the Global Game Jam® History.