Despite its lounge-conquering ambitions thanks to the upcoming Steam Box, Valve is not one of its competitors, says Microsoft.

Speaking at Microsoft's TechForum this week, Microsoft executive Don Mattrick said that although Valve was “doing some innovative stuff”, none of it was a threat to his company.

"The scale of products and things that are being brought to market are probably a little bit richer when I look at Sony, Nintendo, Apple, and Google," said Mattrick.

For his part, Valve co-founder Gabe Newell claimed last month that Apple was the biggest threat to the Steam Box, and that it could “roll those consoles guys easily”.

Mattrick also said that despite criticism of its curated nature, Microsoft wouldn’t be opening its Xbox platform anytime soon.

"There's a certain level of technical and production competency that people have to get through because we're trying to curate great experiences," he said.

"We're trying to make sure that what exists upon our service on our system is done to a quality level and has interest for people who are likely to use it."

Yesterday Newell announced that the first Steam Box prototypes would be in the hands of the public within four months.