There are 4 expeditions in Fathom; each introduces new species and gameplay twists. We suggest that you play through them in order at least once, but once you’re familiar with each expedition, you can replay the expeditions as many times as you like, and in any order.

You’ll see the numbers 2/3/4 on player consoles; this is a reminder that the corresponding expedition has additional rules that activate at these stages of the round.