This week marks the month of Mega Man in regards to 3DS Virtual Console releases, starting with Mega Man Xtreme. Next week will see Mega Man II, followed by Mega Man III, then IV, then V (the best portable game), and finally Xtreme 2 on May 29th.
As some of you may know, I replayed every major Mega Man game back in 2013, so you can find info on the regular series here, and the X series here (which includes Xtreme and Xtreme). Out of all of the releases, I'd highly recommend picking up Mega Man V as soon as it hits for sure.
Mega May [Nintendo]