A game name appears on a page you have not visited before. Is it a recent release, an older product newly added to a directory, or simply the subject of a new article? The answer matters because each claim needs a different date and source. A fresh page by itself can't tell you which event occurred.
Keep three dates in separate fields
A release date describes a product launch or a version made available by its publisher. A listing date describes an entry being added to a directory. An editorial date describes a change to an article. Write those labels explicitly so one date does not get reused for all three.
Browse yono games to find the title you are researching. Its editorial policy distinguishes changes to page content from a check of app details and from any published app update. That distinction gives you a practical way to record evidence without inventing a missing release date.
Work through an invented example
Suppose a directory adds an app on Tuesday and fixes a spelling error on Friday. A later article may show Friday as its update date. Neither event establishes the release date. To call the app newly launched, you would need separate evidence from a suitable source.
YonoGames.live describes its collection as a directory with individual guides and categories. A directory can make a title easier to discover without certifying that it just launched. Treat the dates it provides according to what they actually describe.
Compare a game with a format
Visit colour trading games for introductions to formats such as WinGo and 5D. A newly written format guide may explain a familiar mechanic. Its publication date does not establish when every product using that mechanic became available.
Shreewin's overview distinguishes named games from other lobby tabs. That illustrates a related point: a menu change, a new title and an updated guide are different claims.
Write the right description
If you found a new page but no release source, say "newly listed" or "new to this directory" only when that is supported. If you found only a wording correction, describe it as a guide update. Plain labels keep your notes accurate even when other readers reuse them later.
The same method applies to screenshots and announcements. Save the source and the date you checked it, and state which event the date describes. If the release date is unknown, leave it unknown. You can still explain what the guide covers and why it is useful without turning a discovery into a launch claim.