If that 40-minute gameplay video wasn't enough to get you psyched for the next chapter in the Mass Effect series, EA and BioWare have now rolled out a demo. It's available for the PC, Xbox 360, and PlayStation 3; you can grab the PC version here, though EA's Origin game manager is required.
The Mass Effect 3 demo purpotedly features "two spectacular levels from the single-player campaign, along with intense four player co-op multiplayer matches." You might not be able to try out the multiplayer just yet, though. The mode apparently has an "early access period running from February 14 to February 17," with early access granted only to "players who have activated their Battlefield 3 online pass"—whatever that means.
That's not the only tie-in between Battlefield 3 and Mass Effect 3, by the way. Joystiq reports that EA is giving a free copy of the former to folks who pre-order the latter on Origin. Just don't count on getting your free game before Mass Effect 3 comes out on March 6. The pre-order states, "Instructions on how to redeem your bonus PC Digital Download copy of Battlefield 3™ will be sent to you via email when Mass Effect™ 3 is released." (Thanks to TR regular DrDillyBar for the heads up.)