Terms and privacy
These terms cover your use of deadlyblock.com. Last updated June 2026.
1. Use of the site
deadlyblock.com lets you run an emulated computer in your browser. By using it you agree to these terms. If you do not agree, do not use the site.
2. No warranty
The site is provided as is and as available, without warranties of any kind, express or implied. There is no guarantee that it will be available, error free, or fit for any particular purpose.
3. What runs on your device
The emulator runs in your browser. Images and disk images you load are processed locally and are not uploaded to or stored by the site. The site does not require an account and does not collect personal information from you for this purpose. A web server may keep standard technical logs, such as IP address and request time, for security and operation.
4. Networking relay
The emulated machine starts with no live connection. If you bring it online, its traffic leaves your browser through a third party relay over a WebSocket, and that relay, not this site, makes the actual connections to the internet on the machine's behalf. The relay operator is therefore the apparent origin of that traffic; this site only serves the page and does not carry or monitor the connection. The relay in use is either the fastest one this site can reach, one you select, or a custom address you provide. These relays are run independently by other people, some are offered only for demos or testing at their operators' discretion, and their availability, speed, and handling of data are outside the control of this site and are not guaranteed. Treat the connection as untrusted, and do not send passwords, personal information, or any other sensitive traffic through it.
The public relays this site can use are wisp.mercurywork.shop, anura.pro, wisp.run, and relay.widgetry.org, and this list may change over time. Thanks to the people who run them. You remain responsible for what you do over the connection, and the acceptable use terms below apply in full. If you operate one of these relays and traffic from this site is causing trouble, or if you want to report misuse you have seen, email block@deadlyblock.com and it will be dealt with promptly.
5. Acceptable use
You are responsible for the images you run and for what you do inside the machine. Do not use the site for unlawful activity, to attack or disrupt other systems, or to infringe the rights of others.
6. Limitation of liability
To the fullest extent allowed by law, deadlyblock is not liable for any loss or damage arising from use of the site, including lost data or work performed inside the emulator. Save anything you need before closing the tab.
7. Third party software
Emulation is provided by v86, which is open source and distributed under its own license. Operating systems and images remain the property of their respective projects and are governed by their own terms.
8. Changes
These terms may change over time. Continued use of the site after a change means you accept the updated terms.
9. Contact
Questions about these terms can go to the contact page.