You are a crew member aboard a vast interstellar ship. You know something is coming: a critical failure, an impact, an infection, a paradox. Choose what it is from the start, or discover it along the way. You have proof. You have certainty. But No one believes you. You play to discover whether you avert disaster, or die knowing you were right.
This is a companion discussion topic for the original entry at https://rpg-trader.com/products/2268/the-cassandra-protocol