I'm not sure if phpbb still supports flash embeds, but I'd like to suggest an arcade section for down-time purposes, complete with a score and ranking system that monitors the highest scoring user for that particular arcade game.
If you need an example of the section layout; I'll try to find some of my old forum communities that used flash arcade games and link them here in this post.
Theirs some really great flash arcade games out there and i feel this would be a great way to have a continuous competition between other users even during Maintenance for Rohan.