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Games that open in their own tab

Why some builds cannot run inside the game page.

Some engines use threads to run faster. Browsers allow that only on a page of its own, not inside another page. When our start-up check sees that your build needs threads, it turns on Open this game in its own tab for you. Players then press Play and the game opens in a new tab.

  • You can turn this on or off yourself under Game details.
  • Safari does not yet support what thread builds need. If you want your game to run everywhere, export without threads.
  • A game in its own tab has the whole window, which also suits games that need a lot of screen.

Updated 2026-10-04. Still stuck?

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