Pandemic Legacy: Season 2 is a co-operative campaign game, with an overarching story-arc played through 12-24 sessions, depending on how well your group does at the game. Treat diseases around the world and race against the clock to cure the world. Gather your gear and prepare to venture into the unknown! in Pandemic legacy: season 2, the world has been ravaged by a Virulent plague and humanity very survival hangs in the balance. It is up to you to get the last remaining cities the supplies they need while unraveling the mysteries of the plague. Your efforts during this time will carry you past the edge of the known world. Each step you take leaves its mark on the world, affecting future games and bringing you closer to dark secrets that could change the course of history. No matter what happens, though, the world is counting on you. You are humanity's last chance. There is no functional difference between the Baclk and Yellows Editions of Pandemic Legacy: Season 2. Both contain the full game, but simply have different key art. Buy both to easily keep track of your separate campaigns with different playgroups! Pandemic Legacy: Season 2Yellow Edition is recommended for 2-4 players, ages 14 and up.