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An old game of mine is now playable, and its page credits Claude Opus 5.5
An old game of mine, We Tank Together, is now playable; its page credits Claude Opus 5.5 with the fixes, and the 24-hour and two-year figures on that page are the page's own claims.
An old game I developed is now playable, and I have Claude Opus 5.5 to thank for it. It is called We Tank Together, a free online multiplayer tank game, and the demo is out now for Windows 10/11 (64-bit) and macOS 10.13 or newer.
What the page says
The game's home page says up to 4 players and 6 tanks can play, hosted or joined with a code, across four maps: Crossroads, Lumber Yard, Fortress and Switchback. The footer reads "Built by a human. Fixed by Claude Opus 5.5." A dev update on the same page credits Claude Opus 5.5 with clearing every coding error and finishing every stage of a Unity project it describes as two years old, all within the first 24 hours. Those are claims on the game's own page, about my own project, not an independent test of the model.
The release behind the credit
Claude Opus 5.5 is the model Anthropic released on Sept. 22, 2026, and we summarized that release in a separate story. The page does not say when its 24 hours ran, so nothing here ties the fixes to the launch date.
Before you download
The page lists the downloads at 48 MB for Windows and 62 MB for Mac. Its Mac help page says the demo has not yet gone through registration with Apple, so when the app is first opened macOS reports that it cannot verify who the developer is, and the home page says a Windows SmartScreen prompt may appear on first launch. Both are the page's statements about its own files. Whether to open a download is your decision.