Terms of service
The short version
- DDxam is a game for practising clinical reasoning. It is not medical advice, and it must never be used to diagnose or treat a real person.
- The game was called DDxordle until September 2026. Same game, same terms; only the name and the address changed.
- It is free. There is nothing to buy, so there is nothing to refund, and you can play it without an account.
- Be decent. Your display name is public on the leaderboards, and an abusive one can be reset or hidden.
- Don't automate, scrape, or attack the site.
Not medical advice
DDxam presents fictional patients and asks you to reason your way to a diagnosis. Every case, clue, reference range and written explanation here is teaching material, generated and reviewed as teaching material. It is not clinical guidance. It does not stand in for training, for supervision, or for a real clinician's judgement. It can contain errors and simplifications, and it can contain details chosen because they make the puzzle work rather than because they describe any real patient. Nothing here creates a doctor–patient relationship. Do not use this site to diagnose or treat yourself or anybody else. If you or someone near you may be unwell, go to a qualified professional, and in an emergency call your local emergency number. If you are thinking about harming yourself, in the United States you can call or text 988, the Suicide and Crisis Lifeline, at any hour.
Who can use it
You must be at least 13 years old to use DDxam, and if you are under 18 you should have a parent or guardian's permission. The game is written for medical students and other people learning clinical reasoning, but anyone curious is welcome to it. We do not knowingly collect information from anyone under 13; if you believe a child has created an account, email us and we will delete it.
Playing, with or without an account
The whole game plays without signing in and without accepting a cookie. Enable saving and this browser is given a random identity, which is what makes your scores, streak and percentile persist. Signing in with Google or an emailed link attaches that record to an account so it follows you between devices. Our privacy policy sets out what is stored and what is not. Keeping access to your own email or Google account is on you; it is the only key to your record.
Display names and leaderboards
Every player gets a display name, and no two are the same. Your name sits next to your score on the public leaderboards unless you hide yourself, which is a switch on your own row that you can flip as often as you like. Pick a name you would not mind a stranger reading.
A name must not impersonate anyone, advertise anything, or work as a slur, as harassment, or as abuse of any other kind. We may reset one that does, and where it is plainly abusive we may hide the account from the public boards without warning. Neither of those deletes your scores.
Fair play
The scoring is the whole point of the game, so please do not forge it. No scripted or automated play. No submitting results the game did not produce. No probing or overloading the site's systems, no scraping the case library, and no reaching for another player's data. Scores we can see are fabricated may be removed, and access that is damaging the service for everyone else may be blocked. One last thing, which is manners rather than a rule: don't give away the day's answer in public before the day is out.
The cases belong to us; medicine does not
The site, its design, its writing, and its case library (every case is drafted with the help of AI and then checked, edited and arranged by us) are ours, and you may not republish them wholesale, scrape them, or pass them off as your own. Using what you learn, talking about cases, and quoting a little of it with attribution are all fine, and are what a teaching game is for. The underlying medical facts belong to nobody. DDxam and the DDxam mark are ours too; please do not use them in a way that suggests we made or endorsed something we did not.
Availability
DDxam is offered free and as-is. A new case goes up daily, but nothing here promises uninterrupted service, promises that a given case stays playable, or promises that scores and streaks can never be lost. Features may change or go away. The game may one day stop altogether, and if it does we will try to say so on the site first.
Warranties and liability
The service is provided as is and as available, without warranties of any kind, express or implied, including fitness for a particular purpose and accuracy of content. To the fullest extent the law allows, we are not liable for indirect or consequential loss arising from your use of the site, and we are specifically not liable for a clinical decision taken in reliance on anything here, which is the thing the first section asks you never to do. Because the game is free, if we are ever liable to you despite the above, our total liability is limited to one hundred US dollars. Nothing in these terms limits liability that cannot lawfully be limited.
Ending it
Stop playing whenever you like. Delete my data, under You in the game's menu, removes everything we hold about you at once and clears your device; or email ddxam.admin@gmail.com and we will do it. We may suspend access for someone breaking these terms, and if there is a way to reach them we would normally explain why.
Changes
If these terms change, the new version appears here under a new date. If you have an account, your next sign-in is your acceptance of the new version, and we will say on this page what changed. If you play without one, playing on after the date is how you accept it. We are not going to quietly weaken what the first section promises.
Where disputes go
These terms are governed by the laws of the State of Texas, without regard to its conflict-of-laws rules. Any dispute about them or about the game will be heard in the state or federal courts sitting in Harris County, Texas, and you agree to that venue. If a court finds any part of these terms unenforceable, the rest stays in force. These terms are the whole agreement between us about DDxam.
Contact
DDxam is made and run by Imaad Virani and John Halphen Jr; "we" in these terms means the two of us. Questions about these terms, or about anything else: ddxam.admin@gmail.com. If the question is about data, the privacy policy will get you there faster.