It would most likely have been a cinematic trailer, created by a VFX company hired for the job. ME5 was in early production, likely no game to speak of at this point, just storylines and concept art mostly. Maybe a vertical slice demo, but I doubt it.

People would just do that, but an app can harvest soooo much more telemetry data. Business executives will claim the app provides a “richer experience,” by which they mean they’ll experience getting richer by harvesting more customer data to sell.

The original self-checkout!