The average effort for the development of each of the original four
games was 90
man-days. For various business reasons, the Kongfu game was developed twice by two separate Teams A
and B, each consisting of two Sanjie developers of comparable skills. Team A developed the Kongfu game in
very much the same
way as the original four games had been developed, which took the effort of 88 man-days.
Group B used RPG-PLA to develop the Kongfu game, which took the effort of 28 man-days.