The general idea is that it is an achievement based event but with a bit of a twist. There would be a lot of different games (board/card/mini) and a short list o achievements for each. You could only get each achievement once so it would encourage people to play as many different games as possible over the course of the day (or weekend depending on demand).
It's currently in the early stage of planning, at the moment I'm just feeling out whether there'd be demand for this type of event? Let me know what you think, I really like to get a format that people want to play so any feedback would be appreciated.