Terms of Use

Last updated: November 10, 2026

Cylone is a free, independently operated website that allows users to run Scratch projects using a modified version of TurboWarp, with enhanced multiplayer and cloud variable functionality.

By using Cylone, you agree to follow these Terms of Use. If you do not agree, please discontinue using the service.

1. About Cylone

Cylone provides a Scratch-compatible project player with additional multiplayer functionality.

The service includes features such as:

• Running publicly available Scratch projects
• Enhanced performance through TurboWarp technology
• Multiplayer cloud variable communication
• WebSocket-based multiplayer networking, used by default
• Optional WebRTC peer-to-peer networking

Cylone is provided free of charge as an independent, noncommercial project.

We may modify, temporarily suspend, or discontinue features as the project develops.

2. Age and Parental Guidance

Cylone is a general-audience service and is not specifically designed or marketed to children under 13.

Younger users are encouraged to use Cylone with the guidance of a parent or guardian, particularly when accessing multiplayer features.

When WebRTC connections are enabled, multiplayer connections may disclose technical network information, including IP addresses, to other participants. WebRTC connections are disabled by default and can be changed at any time in Settings. Parents and guardians should review our Privacy Policy before allowing children to use these features.

Cylone does not currently require users to create accounts or submit their ages.

3. Acceptable Use

You agree to use Cylone responsibly and in accordance with applicable laws.

You must not:

• Deliberately disrupt, overload, or interfere with Cylone's servers or networking systems.
• Attempt to gain unauthorized access to Cylone's infrastructure or other users' systems.
• Use Cylone to distribute malware, malicious code, or harmful content.
• Harass, threaten, impersonate, or deliberately disrupt other users.
• Exploit multiplayer functionality to interfere with other people's projects or sessions.
• Use automated systems to flood the service with excessive requests or messages.
• Use Cylone to violate the intellectual property rights or privacy of others.

We may restrict access or take other reasonable measures to protect the service and its users.

4. Scratch Projects and User Content

Cylone allows users to load and run Scratch-compatible projects.

Projects remain the work of their respective creators. Cylone does not claim ownership of projects loaded through the service.

Users are responsible for ensuring that the projects they load, share, or operate comply with applicable laws and any relevant project licenses.

Cylone does not independently review or endorse every project that can be loaded through the platform.

Some projects may contain user-generated content, external extensions, links, or functionality that Cylone does not control.

5. Multiplayer and Cloud Networking

Cylone provides custom networking functionality for multiplayer Scratch projects.

By using multiplayer features, you acknowledge that:

• Cloud variable updates may be exchanged with other participants in the same project or room.
• Multiplayer rooms may be accessible to other users who connect using the same room or project identifier.
• By default, multiplayer information is relayed through Cylone's WebSocket server.
• If you enable WebRTC connections, WebRTC may establish direct connections between your device and other participants who have also enabled them.
• When WebRTC connections are enabled, technical network information, potentially including IP addresses, may be exposed to other participants during connection establishment.
• WebSocket connections are also used to relay information when direct connections are unavailable.

You should not transmit passwords, private messages, sensitive personal information, or other confidential data through multiplayer cloud variables.

Cylone does not guarantee that multiplayer communication will always be private, uninterrupted, or free from interference.

For more information, please review our Privacy Policy.

6. Service Availability

Cylone is maintained as a free, independent project.

We aim to keep the service functional, but we cannot guarantee continuous availability, consistent performance, or compatibility with every Scratch project.

Multiplayer sessions may be interrupted by network conditions, server maintenance, software updates, or technical problems.

Temporary multiplayer data may be lost when participants disconnect or the server restarts.

Cylone does not provide permanent storage for users' Scratch project files, multiplayer room histories, or cloud variable data. Projects are loaded from external sources, and multiplayer information is exchanged during active sessions rather than saved to a persistent project database.

Temporary browser storage, server diagnostic logs, and records maintained by third-party services are separate from this policy.

Cylone is not intended for storing important information or providing guaranteed data persistence.

7. Third-Party Services

Cylone incorporates or interacts with third-party technologies and services, including TurboWarp, Scratch, and external networking infrastructure.

These services may have their own terms, licenses, and privacy policies.

Cylone is not responsible for the availability, operation, or independent content of third-party services.

Users should review the applicable terms when using external extensions, projects, or connected services.

8. Open-Source Software and Intellectual Property

Cylone uses a modified version of TurboWarp's open-source Scratch GUI.

The modified GUI is based on software licensed under the GNU General Public License version 3 (GPL-3.0).

The corresponding modified source code is publicly available here.

Open-source components remain subject to their respective licenses. Nothing in these Terms limits rights granted under those licenses.

The names, logos, and trademarks of third-party projects remain the property of their respective owners.

For additional information, see our Credits & Licenses page.

9. Security and Responsible Use

Users must not intentionally exploit vulnerabilities, interfere with other users' connections, or attempt to compromise Cylone's infrastructure.

If you discover a security problem, we encourage you to report it privately rather than exploiting it or exposing other users' information.

Security concerns can be reported through our Contact page.

10. Disclaimer of Warranties

Cylone is provided on an "as is" and "as available" basis.

To the extent permitted by applicable law, we make no warranties regarding the service's availability, reliability, performance, security, or suitability for a particular purpose.

We cannot guarantee that every project will run correctly or that multiplayer connections will always function as expected.

11. Limitation of Liability

Cylone is a free project provided without guarantees of continuous availability or error-free operation.

Cylone's operator is not responsible for ordinary disruptions such as temporary outages, interrupted multiplayer sessions, lost temporary cloud variable data, or failures of external services, except where the law provides otherwise.

This section does not take away any rights or legal protections that users cannot waive under applicable law.

12. Changes to These Terms

These Terms of Use may be updated to reflect changes to Cylone's features, infrastructure, or operating practices.

The latest version will be available on this page, with an updated revision date.

Continued use of Cylone after updated Terms are published constitutes acceptance to the extent permitted by applicable law.

13. Contact

For questions, concerns, abuse reports, or security-related matters, please visit our Contact page.

Independent Project Notice

Cylone is an independent project and is not affiliated with, endorsed by, or officially associated with TurboWarp, the Scratch Team, or the Scratch Foundation.

Thanks to the TurboWarp developers and contributors for creating and maintaining these technologies!

Cylone also builds upon technologies originating from Scratch, thanks to Scratch developers!