As in the first two pandemic legacy games, each time you play brings new cards, rules, and conditions that affect future games. Ever-changing elements means that every game will be unique to your group. A campaign-based game where you will play between 12 and 24 games!. Designed as a prequel, pandemic legacy: Season 0 does not require you to have completed season 1 and season 2 before diving into this cold war spy thriller.