A very good game but this port is not perfect.
When this game was ported to Wii, a few things did not work out perfectly. Most noticable is that the game runs about 25 percent slower than the original does. This makes the game easier since you can time your jumps and your firing better. Also the music does not sound as good when its not in the right tempo. Also there is a "buzzy" sound after you have fired the mega buster which should not be there. The colors of the game tend to be a little darker compared to the original as well. I would recommend getting the Mega Man Anniversary collection instead of this port which is closer to the original and where you also have save points.