How can it be a step backwards if we haven't even seen it in action? And its funny all these talks about refunds, but not a legitimate claim to receive one.
12. Refund Policy:

Xsyon (the "Service") is an interactive multiplayer online game world provided by Notorious Games, a Nevada LLC. It is not a product purchase. There are absolutely no refunds given on the establishment of an account and subscription to the service. The service is non-transferable. The Service is provided "AS IS" and is in a constant state of development and evolution. The experience of the online game will change over time. Signing up for the Xsyon service constitutes full acceptance of these Terms of Service and in accordance with these Terms of Service, Xsyon is a changing online world affected by the players. As such the world cannot be used as a free trial. Free trials will be offered separate from the paid Xsyon Service.

The Xsyon proprietary Game Client (the "Software") can be obtained as a free online download and is required for your usage of the Service. The software is a free download provided “AS IS.”

There will be no refunds issued should your computer fail to meet the minimum requirements to run the software or due to your dissatisfaction with the service.
You can try for a refund but unfortunately, unless they are feeling charitable then I doubt you will receive one.