Climate education card game
Sinner or Saviour
Sinner or Saviour
B2B Customer? Order the game and marker sets separately.
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Master Climate Strategy with Sinner or Saviour – The CO₂ Emissions Card Game
Take on the ultimate sustainability challenge with Sinner or Saviour, an engaging educational card game for 3–6 players. Designed to spark meaningful conversations about climate change, this game combines strategy and fun while teaching players about real-world CO₂ emissions.
Each round, players predict how many tricks they can win while protecting their limited “climate budget.” Every card represents an everyday activity with its CO₂e footprint, from brewing coffee to taking a long-haul flight. Special Sinner and Saviour cards add exciting twists: will you lead your group to a sustainable future, or plunge it into climate chaos?
Ideal for eco-conscious game nights, classrooms, and sustainability workshops, Sinner or Saviour turns climate science into an interactive experience. Printed sustainably in Europe, this game is perfect for anyone looking to learn, play, and make an impact.

Fun, strategy, and CO₂ footprints
Sinner or Saviour turns learning about CO₂ and the climate crisis into a fun and eye-opening experience with friends.
Climate education doesn't have to feel like homework. Through strategic play, you can learn about CO₂ footprints and the climate crisis with friends.
In this educational game for teens and adults, you'll learn actionable and affirming insights to reduce your footprint.

Gameplay
You can play with 3-6 people within 45 mins. The cards show CO₂ pollution in the areas of energy, mobility, nutrition and consumption. The lower the pollution, the better the card.
Players estimate their tricks per round and manage a climate budget of 150 points. The player with the most climate points at the end wins.
Sinner or Saviour FAQs
What is Sinner or Saviour about?
It’s a trick-taking strategy game focused on real-life CO₂ emissions. Players compare the climate impact of everyday actions, make predictions, and manage a shared climate budget. Full game play instructions, including variations, are here.
How many people can play?
The game is designed for 3–6 players, ages 14 and up. A typical session lasts about 45 minutes.
What’s included in the box?
You’ll get 52 action cards, 4 Sinner cards, 4 Saviour cards, 6 reusable scorecards, and a guidebook. Scorecards can be reused with dry-erase markers, included.
I can't believe one of the cards. Can we check your sources?
Of course! Here is the game's complete bibliography.
What makes Sinner or Saviour eco-friendly?
We are so glad you asked. We printed Sinner or Saviour playing cards in Melk, Austria. Come behind the scenes with us here to see how our high quality playing cards are made.
Is the game only in German?
Currently, the game and guidebook are in German. Which languages should we translate it into next? We'd love your feedback.
Where can I buy extra scorecards or markers?
If you don't have whiteboard markers, here are scorecards you can print at home. You can buy extra scorecard markers here.
Collapsible content
Materials + Life Cycle
Our card decks are printed Cradle to Cradle certified Silver in Melk, Austria.
This means: only renewable energy was used in production, and the materials (FSC-certified paper and non-toxic inks) are safe and fully recyclable.
Pollution footprint
We aim for a net positive impact from our product's production, transport, and consumption.
Producing each deck emits about 0,18kg CO2e, which our supplier offsets by 110%. We share more about this below.
Discounts
Discount codes can be applied on the checkout page.
Shipping + Delivery Times
Where we ship
All of our products ship to the following countries:
🇩🇪 Germany 🇦🇹 Austria 🇧🇪 Belgium 🇨🇿 Czechia 🇪🇪 Estonia 🇫🇮 Finland 🇫🇷 France 🇮🇪 Ireland 🇱🇻 Latvia 🇱🇺 Luxembourg 🇳🇱 the Netherlands 🇳🇴 Norway 🇸🇰 Slovakia 🇸🇮 Slovenia🇨🇭 Switzerland
Many of our products also ship to the 🇺🇸 United States.
Shipping costs
Orders in 🇩🇪 Germany over €50 ship free.
Shipping costs & options are displayed on the order confirmation page at checkout.
🇺🇸 US customers have the option to pay extra for tracking; otherwise shipments will be sent untracked to reduce costs for you. US customers are responsible for any customs and tariffs applied to shipments upon entry to the US.
Fulfilment times
Puzzles are fulfilled within 5 business days; all other products are usually fulfilled within one business day.
Delivery times
Shipments are usually delivered within 🇩🇪 Germany within 1 week after shipment, and within 🇪🇺 the EEA 2 weeks after shipment.
Tracked shipments to 🇺🇸 the US can take up to 15 days for delivery after shipment. Untracked shipments to 🇺🇸 the US can take up to 45 days for delivery after shipment. It's a long boat ride, thanks for your patience! 🚣
Dimensions
Cards: 70 x 120 mm
Good to know
This product is for ages 14+.
All brand names used in this game are the property of their respective owners. Their inclusion is for educational and illustrative purposes only, and does not imply any affiliation, sponsorship, or endorsement.
The content in this game is for educational and illustrative purposes only and does not constitute medical, health, or legal advice.

About the Developers
Maike Klingler and Luisa Schrott are UI/UX designers from Berlin. In the face of climate crisis, they use design to envision sustainable futures in which everyone can take responsibility for the planet.
They developed Sinner or Saviour during their studies to create an entertaining gaming experience for friends to discuss, reflect, and learn together.
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