

Tethys is a cooperative print-and-play board game in which players impersonate a research team on an oceanographic ship exploring the ocean floor.
Keywords
Overview of the game
The purpose of the game is to prove the hypothesis described on the Thematic Card and publish the results.
To do this you will have to core sediments from the sea floor and analyze them to find Key Cards, which will allow you to unlock Theme Cards and turn over the Theme Card.
The game is cooperative: each person is part of the same team, you win or lose together! You can consult and decide what to do freely, since there is no set order of turns.
The game is divided into Rounds, during which you must turn over 1 Event Card, move to the various areas of the Ship to use effects, and play Action Cards from your hand.
The game ends when there are no more cards in the Action Deck, the available Navigation days come to an end, or your Stress Level reaches the maximum value of 10.
Behind each Theme Card you will find directions for calculating the score.
What the game contains
The game contains:
- 33 Analysis Papers
- 21 Key Cards
- 12 Stall Cards
- 95 Action Cards
An example visualization of the charts follows.

What you need to play
The following are required to play the game:
- a printer
- scissors
- glue stick
Suggestions:
- If you have a color printer, the game will be more immersive.
- Use glue stick to avoid creases or bulges in the paper.
- Print on thicker paper (like 100-130g/m2) for a more robust result.