Your Windows 10 product key serves as proof that you actually own Windows 10, and might need to be entered when you reinstall or upgrade Windows.

You can redeem a product code in Epic Games from a physical or digital copy of a game on the Epic Games Launcher or in your browser.

"Our engine was not at all prepared to run on multiple processors simultaneously many years ago," according to SCS co-owner Petr Sebor. "So there was quite a bit of rewriting involved. The scope, in ...