The game is under active development right now and will take some time coming out. So expect a gap of few months from the date of writing of this post before you get the game. And Mass Effect 3 demo version will come up after the full game release only. That is there will be post-game release demo version only. Some new details have been accidentally revealed by EA. The game got listed on the product download page unknowingly where some details also got mentioned about it. Neverthless, EA has now removed the game and its details from the products download page. However those details about Mass Effect 3 are still available with us.
Earth is burning. Striking from beyond known space, a race of terrifying machines have begun their destruction of the human race. As Commander Shepard, an Alliance Marine, your only hope for saving mankind is to rally the civilizations of the galaxy and launch one final mission to take back the Earth.
What are the contents of Mass Effect 3 demo version? At this stage it is very hard to tell about the contents of the demo version. Even the content of the full are not known yet. Moreover it's quite difficult to tell which platforms will the Mass Effect 3 demo release on. But as far as we know, it is going to release on all the platforms the full game has been announced for. That is there will be Mass Effect 3 demo for PC, Playstation 3 and Xbox 360. But all this is possible only after the full version releases. Mass Effect 3 demo will be very big in size and hence you would require high speed broadband connection to download Mass Effect 3 demo.
Mass Effect 3 - World Collapsing Trailer
Mass Effect 3 System Requirements
Mass Effect 3 Gameplay Demo Video
Mass Effect 3 Demo Download