Zune HD game evidence mounts

New evidence has been uncovered that suggests Zune HD will be Microsoft's first foray into handheld gaming.

A promotional video, dug up by Engadget, shows a short clip of a racing game running on the device. It's little more than a red car weaving around an urban track, but means Microsoft may be ready to square-up to the iPod Touch and iPhone.

News that Zune Marketplace will be integrated into Xbox Live beefs those claims up, as does mention of games by Zune chip-maker NVIDIA on its website.

Given Microsoft's silence, however, gaming clearly isn't the focus for Zune HD.

Zune HD launches across North America on 15th September for $289.99 (32GB) or $219.99 (16GB). There will be no UK release this year.