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  • Doctor Who: Worlds Apart is a product licenced by BBC Studios to Reality Gaming Group (RGG), who handle the design and development of the game, including the minting of all NFTs.


  • Below is RGGs full sustainability plan for creating "eNFTs" which are both sustainable and environmentally friendly.



Non-Fungible Tokens, or NFTs, are digital assets encoded on a blockchain that represent ownership of a unique asset.


All NFTs operate on a blockchain network and all blockchain networks do use energy to operate. However, the amount of energy can vary considerably based on the blockchain being used and the steps taken by the company in charge of creating the NFTs. Our NFTs use a version of Ethereum technology.


Only around 1% of transactions on the Ethereum mainnet can be attributed to NFTs. Most of the energy used by Ethereum is based on the speculative worth of the currency, not on NFT trading.


How much an NFT impacts the environment depends very much on the technology behind the minting process. In 2017, RGG recognized the carbon cost of trading on the Ethereum mainnet and took steps to reduce our carbon footprint for every NFT traded through our network and games. One of the main changes we’ve already made is to establish our own sidechain.


Our sidechain has allowed us to create eNFTs, a more environmentally friendly NFT that use around as much energy for each minting as a standard online Visa transaction, far less than if we were operating on the Ethereum mainnet. This also gives our users no Ethereum gas fees, thereby further reducing energy use.



We’ll be integrating with Layer 2 networks, such as Polygon, which essentially allow us to handle more of the heavy lifting of a transaction off the blockchain. This reduces the energy cost as more of the work will be done on our data servers, which already use 100% renewable energy.


Once the layer 2 network has handled some of the work, it communicates with the layer 1 network (the original mainnet) all changes which are then verified as normal. Layer 2 networks reduce carbon footprint overall when compared to the mainnet. We plan to be launching this by August 2021.


The Ethereum network will also be moving from a “Proof of Work” to a “Proof of Stake” system within the next year, which will reduce the mainnets energy consumption by as much as 90% overnight.


Read on for more information on our “Game for Earth” eNFTs and our longer-term plan for creating a sustainable NFT ecosystem.


Our 2040 Vision
"Game for Earth" Restoration

By 2040 RGG will have a climate restoration footprint.

Our Game for Earth community makes a significant restoration footprint

In 2040, the more you play, the more you help restore our planet.

Our Roadmap


Pay it forward

  • • Up to 80% of the RGG transfer fee will be converted to "Game for Earth" partnerships and communities.
  • • All our servers used for any data transaction will be carbon neutral.


From a local footprint to a global leader.

  • • We'll be establishing contracts with global data centers that focus on renewable energy initiatives
  • • We'll establish partnerships for our Pay it Forward, "Game for Earth" initiatives
  • • We'll ensure that any digital card game will have a significantly lower carbon footprint than the physical versions.


Minimise our CO2 footprint in the blockchain.

  • • We've established our "Game for Earth" framework and roadmap.g
  • • We've chosen data providers and partners that use renewable energy solutions.
  • • We've developed our NFT technology on our sidechain, increasing energy efficiency compared to the Ethereum mainnet.


We do not use GAS.

We do not use mining.

Our sites all run on data centres that use renewable energy sources.

At Reality Gaming Group, we work with Hetzner datacenters that produce zero carbon emissions.

• Hetzner Online use hydropower, provided via Energiedienst, a TÜV certified company. This generates green energy from 100 per cent CO2 free and environmentally friendly hydropower.

At Reality Gaming Group, we work with Hetzner datacenters that produce zero carbon emissions.

• Hetzner Online use hydropower, provided via Energiedienst, a TÜV certified company. This generates green energy from 100 per cent CO2 free and environmentally friendly hydropower.

The power of our
"Game for Earth" eNFTs

RGG has decided not to use the energy intensive, "Proof of work" system for our eNFTs. That means all our eNFTs avoid the energy cost associated with:

  • • Minting
  • • Bidding
  • • Cancelling Bids
  • • Sales
  • • Transfers

We have also avoided using 211 KG of CO2e/kWH compared to a standard, proof of work NFT.

In fact, our "Game for Earth" eNFTS use between 0.1 to 1g, utilizing our sidechain and our data centres backed up by renewable energy.

What do our gamers use, when doing an hour videostream

Going from a local footprint
to a global footprint

RGG Gaming is a growing company. We are about to reach one million players globally.

We've partnered with AWS for our data centres to help us scale as we continue to grow.

AWS is the largest corporate buyer of renewable energy in 2020 and 2021, driving renewable investments forward. AWS has a long-term commitment to 100% renewable energy that they aim to reach by 2025.

Pay it Forward
"Game for Earth"
Community & Partnerships

If we can encourage our large userbase to take small steps, we can make a greater impact on global restoration.

• In 2021 and 2022, we are focusing on establishing partnerships with brands that can help us make a global impact on the environment.

• Our goal is to transfer 50% of our transfer fee to these “Pay it forward” partnerships.

• By 2025, we hope to increase that amount to 80%


What is the estimate difference of carbon footprint between
paper and RGG Blockchain eNFT trading cards?

Paper Trading
Digital Trading
card at RGG with
1 hour streaming
gCO2 e gCO2 e
Max 3991,6 5,63
Middle 1995,8 1,54
Min 1397,06 0,28
Show Calculation

Paper estimated based on:

1)M. Berners-Lee, How Bad Are Bananas? The Carbon Footprint of Everything, 2011 Australian Paper Industry Association, Paper Part of Everyday, 2010.

2) Hanna Pihkola, Minna Nors, Marjukka Kujanpää, Tuomas Helin, Merja Kariniemi, Tiina Pajula, Helena Dahlbo & Tiina Pajula Title; Carbon footprint and environmental impacts, of print products from cradle to grave, Results from the LEADER project (Part 1) December 2010

3) Retail specification on DR.WHO Trading Card Amazon + shopping trading card.

4) 2020, Global Citizenship, ©2021 International Paper Company.


RGG NFT Co2 footprint:

2) Residential Consumer Electronics Energy Consumption in the United States in 2017 Bryan Urban, Kurt Roth, Mahendra Singh, and Duncan Howes Fraunhofer USA Center for Sustainable Energy Systems

4) Climate Change Implications of Gaming Products and Services by Joshua Aslan Volume I Doctoral dissertation, Submitted for the degree of Engineering Doctorate in Sustainability for Engineering and Energy Systems, Centre for Environment and Sustainability, Faculty of Engineering and Physical Sciences, University of Surrey, February 2020, © Joshua Aslan 2020

5)The Carbon Footprint of streaming video: fact-checking the headlines, By George Kamiya, 11 December 2020 EIA - International Energy Agency.

6) Hydropower. Status report 2018, sector trends and insights, IHA - International Hydro Power Association

7) Schlömer S., T. Bruckner, L. Fulton, E. Hertwich, A. McKinnon, D. Perczyk, J. Roy, R. Schaeffer, R. Sims, P. Smith, and R. Wiser, 2014: Annex III: Technology-specific cost and performance parameters. In: Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Edenhofer, O., R. Pichs-Madruga, Y. Sokona, E. Farahani, S. Kadner, K. Seyboth, A. Adler, I. Baum, S. Brunner, P. Eickemeier, B. Kriemann, J. Savolainen, S. Schlömer, C. von Stechow, T. Zwickel and J.C. Minx (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA

3) European Environmental Agency database on Greenhouse gas emission intensity of electricity generation based on the following sources National emissions reported to the UNFCCC and to the EU Greenhouse Gas Monitoring Mechanism provided by European Environment Agency (EEA)

Supply, transformation, consumption - all products - annual data provided by Statistical Office of the European Union (Eurostat)

COM 562 final and SWD 176 final provided by European Commission

Other Blockchain footprint:

8) The Carbon Footprint of Bitcoin, Christian Stoll 5, Lena Klaaßen, Ulrich Gallersdörfer, ARTICLE| VOLUME 3, ISSUE 7, P1647-1661, JULY 17, 2019

9) Ethereum Energy Consumption Index

The Ethereum Energy Consumption Index provides the latest estimate of the total energy consumption of the Ethereum network. Digiconomist Copyright © 2021.

A box of trading card
Paper trading card 2010 source
Paper trading card 2020 calculated with Environmental improvement in the fiberbased sector ( reduction + decarbonisation EU and US) Digital Trading card with 1 hour streaming
gCO2 e gCO2 e gCO2 e
Max 3991,6 2075,6 5,63
Middle 1995,8 1037,8 1,54
Min 1397,06 726,5 0,28

What can you do
at home?

Clear up any files using
cloud storage.

Buy household
energy from
renewable resources.

Play games outside of
peak hours.

Use tablets or phones
rather than
PCs and consoles.

Use our "Game for Earth"