Excavation Earth Second WaveSecond Wave is the first expansion for Excavation Earth, introducing two new races the Collectors and the Influencers along with new game play elements and ways of scoring. The Observation Barge, which lets you further manipulate the market demand for artifacts and score points at the end of the game. Achievements add a whole new way of scoring by completing set goals and Racial Wildcards give each race their own, more powerful action card to boost