A solid remake of the first 3 Mega Man titles, considering the context of the time. The Mega Drive Soundtrack really slaps, while not taking to much of the identity of the NES versions. Performance was improved in all titles, which is especially awesome for MM 3. The power of the 16-Bit Mega Drive also gave the opportunity to overhaul nearly all graphics from the original. Stages have way more background details and replaces a lot of the black spaces form the originals. Mega Man himself looks closer to his actual artwork and less like little Timmy's first pixelart.

The Wily Tower is really fun as a post game reward and adds a lot of replay value.

My only gripe would be the controls. They aren't really sloppy or anything but Mega Man seems to stick to the ground a bit to much while changing directions. The best desrciption would be "Sticky Feet". But you can adjust to that over time, but some sections in MM1 and MM2 are definietly made tougher because of it. I think Quick Man's Stage is nearly impossible without using Flash Man's ability, which makes the boss fight against the bot himself really painful.
But other than that: Really solid for 1994.