Briant told Campaign at a launch event last week that the PS4 console, which launches on 28 November in the UK, would take on "a new set of competitors" such as games that can be played on smartphones.
He explained that the new PlayStation console had moved beyond its traditional console rival, the Xbox, and should be seen in the context of other media platforms.
This week, PlayStation launches a second screen app for iOS and Android, which will allow users to turn their smartphone into a remote control for the PlayStation 4, buy Sony products and download add-ons and manuals for the console.
Briant added that advertisers could create their own branded games to appear on the console that can also be connected to social media. He said: "A brand could actually create a game and share that with the PS4 audience. They can experience it and then they can then share that with the peer group."
PlayStation's ad sales are run by ad house Ad2One. Dave Barr, the commercial director at Ad2One, said advertising opportunities would be "multi-functional" thanks to opportunities to download ad content, share socially and shop within the console's navigation system.
The PlayStation 4 launched on 14 November in the US. The lunch was marked globally with a brand advertising campaign created by 180 Amsterdam.
In London, the Oxo Tower was dressed with PlayStation symbols as part of a promotional campaign by Manning Gottlieb OMD, Talon Outdoor, Curb Media and Fever PR.