CO2 Cards Update — Buy and Swap Cards

Hello Everyone,

We are happy to announce that a new update for the CO2 Cards game is now live on Google Play. Download or update your game:

You can now buy booster packs with project cards directly from the shop and support green projects directly by using the cards to reduce CO2 or clean plastics from the ocean.

Swap your extra cards with other players at a 1:1 ratio in order to reach the minimum amount required to offset.

Stay tuned for more exciting updates!

Best regards,

The Phoneum Team

Phoneum is a decentralized cryptocurrency, that operates on mobile devices via app ONLY. For more information, please visit our website: