10's weapon switching is a major knock against it imo. Never ever ever use it, and thanks to the button position on the Wii remote I sometimes switch by accident. Give me pause menu switching any day, because when I switch weapons I want it to happen instantly, I don't want stuff to be going on while I try to cycle through weapons.
Another knock on 10 is the graphics. 9 looked terrible on PS3 and 360 because they used that terrible "HD" smear filter, but the Wii version looked just as sharp as an actual 8-bit game. But in 10, all three versions seemed to be smeared.
It's not a BAD Mega Man game, but it's definitely below 2, 3, 4, and 9 for me.
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Black Turtle spilled my diet soda!