Last updated October 20, 2026.
This website is run by Smooth Bird Studios LLC. By using it you agree to these terms.
Our content
The words, pictures, logos and product names on this site belong to Smooth Bird Studios LLC. You may link to any page and share screenshots of it. Please do not copy the site or use our names or logos in a way that suggests we made or endorse something we did not. The two typefaces are used under the SIL Open Font License, and their licence files are published with the site.
No promises
We keep this site accurate, but it is provided as it is. A product described here as in development may change before it is released, or may not be released.
Our products
Each product has its own terms. Marble Rivals: Race Royale: Terms of Use.
Law and contact
These terms are governed by the laws of the State of New York, USA. Questions: support@smoothbirdstudios.com.