Greenpeace is asking people to add the following game to their websites in an effort to spur more responses to its mailing campaign to the Japanese government over the arrest of two activists in Japan.
Police arrested the activists on suspicions of theft (of whale meat) and trespass. (See stories here and here.)
Playing the game (and either succeeding or failing to free the caged individuals) leads to a screen asking the player to take real action, by signing a letter to the Japanese government protesting the arrests. The pro-forma letter opens on a separate web page.