In 'Watch the Skies', the Earth is threatened by the appearance of aliens. You take on the role of either a political, military or scientific leader of a nation and then decide how to react to the events orchestrated by the alien players. Another option is to play a journalist. These players will question every move you take.
For new players: A megagame is a daylong event for a large group of players, with simple rules. You can think of it as ‘a sandbox board game meets a roleplaying game’. The focus lies on the interaction between players. You are part of a team and your actions can and will influence the whole game and its outcome.