You can try out the demos for Metal Gear Solid Snake Eater 3DS and Mass Effect 3 today.
Metal Gear Solid
Konami say the MGS demo puts players in the opening segment of the game, where gamers trudge through the swamps of a Soviet jungle to search for a locked-up scientist.
Metal Gear Solid: Snake Eater 3D is a port of the PlayStation 2 stealth game with tweaks designed to take advantage of the 3DS hardware. These include 3D visuals, as well as touch-pad and camera support.
Mass Effect 3
EA/Bioware is actually giving you an in-game bonus for Shepherd-ing it up with the Mass Effect 3 demo in the form of downloadable armor for your character in Kingdoms of Amalur: The Reckoning—and vice versa if you play the KoA demo.
Release Dates
Metal Gear Solid Snake Eater 3DS will be available on February 21st while Mass Effect 3 arrives for the PS3, PC, and Xbox 360 on March 6th.
