Various abilities make it more interesting to play through the levels, Variety in levels and the enemies faced by Mega Man, Great selection of bosses to fight
Lack of basic features such as crouching can be confusing to anyone new to the Mega Man franchise,
Abstract: Put me in front of Mega Man X and I will play it and probably beat it. The game is so familiar to me now that any playthrough is about 80% muscle memory, and that's okay, because the other 20% of my thought process is something like "this is so awesome...
