In every Metroid game, from the NES original through Metroid Prime, there's been a certain weight to Samus. She can run faster than someone in a giant suit of armor should be able to, yes, and she can triangle jump to ridiculous heights, but Samus has always felt slow to start and build up speed, as would be expected of someone covered in metal.

More than the perspective changes, the ability to walk toward and away from the screen, the auto-aiming or any of the other new elements in Metroid: Other M, Samus's "weight" feels the most different. She is faster than she's ever been in Team Ninja's take on Metroid and accelerates to full speed instantaneously. The faster movements naturally lend the game a faster pace, and the way Samus zips across the screen makes the Team Ninja influence apparent.