Why cant anyone use google or at least research before posting? i mean this was a simple question and the answer was there, and EA will reset to 0 then the tool becomes your perfect companion...
http://activate.ea.com/deauthorize/deauthtool/deauthMassEffect.exe as to the playability of MassEffect? Its the only internet with DRM game I own that I support and highly recommend. That's huge from a guy that wont even use steam ^_^
If you have a 360 I recommend that version over them all but if you must get the PC you wont be disappointed...
Burnout Paradise The Ultimate Box
Command & Conquer: Red Alert 3
Crysis Warhead
Dead Space
FIFA Manager 09
FIFA Soccer 09
The Lord of the Rings: Conquest
Littlest Pet Shop
Mass Effect
Mercenaries 2: World in Flames
Mirror's Edge
My Sims
Need for Speed: Undercover
NHL 09
Spore
Spore Creature Creator
The Sims 2 Apartment Life
The Sims 2 IKEA Home Stuff
The Sims 2 Mansion & Garden Stuff
All EA games with DE-Auth tools currently available...