How long does it take to beat Mega Man Zero/ZX Legacy Collection?

When Mega Man Zero/ZX Legacy Collection arrives on Feb. 25, longtime fans and newbies alike will gain access to six more Mega Man games on modern machines. The package includes four titles from Mega Man Zero and two more from Mega Man ZX, which should offer up quite a bit of play time.

But how much play time, exactly? How long does it take to beat Mega Man Zero/ZX Legacy Collection?