As a direct sequel to Mega Man 2, MM3 is legitimately pretty good. They've managed to fine tune the boss design to a pretty great level, with difficult tactics required that expressively use your movement and slide dash. The level design is just as good as the previous, with very interesting locales that give you opportunity to use your other robot powers.

It still falls into a major polish trap with certain sections cutting the framerate so awfully that precision platforming is obnoxious unfortunately. Mods can fix this (and there indeed are ones out there) but overall it's still probably the least polished entry so far. The music is also a step down from the previous game, and the last sets of wily levels are very restrictive.

Overall, it's a good action platformer still worth playing. Definitely recommend, even if I prefer MM2 just a tad more.