prime games were also alot diferent from the main metroid games.
2d metroids and primes are preety diferent and then you got metroid prime pinbal,metroid prime hunters and other m, metroid is very diverse gameplaywise imo.
aye, but the 3d games and 2d games still feel the same. in my opinion, i think it comes from the sense of atmosphere, exploration, and isolation. The gameplay works hand-in-hand with this. Prime 2 and super's atmosphere was almost organic. from the music to the environments, it all tied cohesively together to give an uneasy sense something was off and overwhelming. And fusion had some the best "dark samus" moment. Those scary staged bits were really well done. that game was a bit more linear, but it got the atmosphere right.
The mechanics of how you shoot, etc, are important, but they're only part of what makes a particular game feel like a certain game. Or, put another way, the better the elements of a game work with each other, the stronger the core of the game feels. The more the shooty mechanics and plot work with the atmosphere and other aspects, the more both are enhanced. Feels more fun.
Like, when they made this last zelda game, they tried to do this. They tried to break down zelda into the core, essential aspects that make a zelda game feel like a zelda game. And then they rebuilt it from there. Many of the mechanics of breath of the wild are remarkably different than other zelda games. But it's still a zelda game. It still feels like one, even while it feels remarkably fresh. For metroid, that might mean coming up with a different way of conveying that same unnerving atmosphere, or finding a new way of incorporating exploration, or coming up with fun ways to make you feel isolated and on your own. Prime did something new with exploration partly through item scanning, for example. The how she shoots her chozo-blaster matter less to me than getting those core parts right....though I'd still prefer they get that part right too XD
Pinball and hunters are more like mario kart is to mario bros. fun but not the same. I put Other M in the same category
not a metroid game, but maybe okay as a metroid spin-off.