The process of scanning for materials was introduced to players in Mass Effect 1, which allowed them to find valuable minerals by accessing various planets and asteroids from the galaxy map. Significantly rarer than the other materials in the game, Element Zero - or ' eezo' - may be a struggle for players to find if they don't know where to look.
Upgrades are an important gameplay element in Mass Effect 2, and in order to get them, players will need to scan and probe planets across the galaxy to gather necessary resources.
