The Egg promo card is a single card addition for Serengeti: A Race for Life that was first given away free to visitors at Spiel '17 in Essen, on purchase on the game. Its availability was thereafter limited to the first year after the release of the game, including at trade shows attended by the publisher, direct sales from their website, and the Kickstarter campaign for the 'Revised Edition' of the game launched in June 2018.