Maybe we can word some bit of text that everyone can stick at the end of their posts to link here so if anyone stumbles onto any related post it'll be easy for them to find the rest of the info?

Something like:

This is a steemitJam post, a game development challenge in 48 hours. The theme was chosen randomly and is Protect It.
If you'd like to see submissions, check the #steemitjamsubmission tag, or #steemitjam for all other related post.
Here is the announcement post.