Who has not played hangman at least once? This globall known game is very catchy in its simplicity. That is why I decided to use it as a campaign against cheap meat; It would arose people´s curiosity and hungry for answers... And, who would like to hang that quite teddy cow?
Greenpeace against cheap meat
This idea could work as a poster as well as an online gif (or an actual game) and also for a guerrilla campaign by using some magnetic billboards to "play" with customers.