What was the internal code name for the original Xbox console?

The original Xbox console’s internal code name was DirectX Box. The name reflected Microsoft’s plan to build a gaming system around DirectX, its collection of multimedia technologies and programming interfaces for Windows.

During development, Microsoft considered several alternatives, including Windows Entertainment Project, Microsoft Total Gaming, and Microsoft Interactive Network Device. DirectX Box was eventually shortened to Xbox in internal discussions, and the shorter name became the preferred branding.

The console launched in North America on November 15, 2001, following its public unveiling in 2001. It used a custom Intel processor and Nvidia graphics hardware, helping Microsoft enter a market dominated by Sony’s PlayStation 2 and Nintendo’s GameCube.

A common mix-up is confusing DirectX Box with a formal retail product name. It was a development-era name, while Xbox became the commercial brand. The Xbox name also connected the console to Microsoft’s DirectX technology without retaining the longer phrase.