Multiplatform sale kicks off this week; Console deals unavailable outside the US
Starting from today through to December 4, the discount offers will take effect on the PlayStation Store, Xbox Live Arcade, Steam, Google Play and the App Store.
The console deals are unavailable outside of the US, though the mobile and Steam discount offers are international. (The Steam sale can be found here).
Holiday sale offers for console
Holiday sale offers for mobile
More details can be found on the official Sega Blog