The following games will be available at no additional costs for PS+ subscribers in NA this month:
Oddworld: New 'n' Tasty (PS4)
Valiant Hearts: The Great War (PS4)
Papa & Yo (PS3)
Sherlock Holmes: Crimes and Punishments (PS3)
OlliOlli 2: Welcome to Olliwood (Vita and PS4)
Counterspy (Vita, PS4 and PS3)
NA: http://blog.us.playstation.com/2015/03/03/ps-plus-free-games-for-march-2015/
EU: http://blog.eu.playstation.com/2015/03/03/playstation-plus-march-oddworld-dishonored-olliolli-2/