Victory and Defeat
At the start of the game, the Invaders are at Terror Level 1 - not really afraid. To win, you need to completely clear the board of Invaders. As you earn Fear cards, you will reach new Terror Levels with easier victory conditions. You win immediately anytime you meet the current victory condition.
You can lose three ways:
Too Much Blight: If the last Blight comes off of the Blight Card, you follow the instructions there, which are often "you lose". …