По словам David Hufford (Product Manager, Microsoft Xbox Group), выход Half-Life 2 на платформе Xbox, по всей видимости, не состоится. Вот небольшой отрывок из статьи опубликованной на Business Journal:

In addition, Hufford acknowledged that another anticipated combat game sequel, Half-Life 2, made by Seattle game developer Valve Software, won't be available for the Xbox as had been previously announced.

"As of now, Half-Life 2 is not going to be o­n the Xbox," he said.

"Valve is sending us mixed messages o­n that."