Kingdom hearts.
It's the most fucking mind numingly easy game I've ever seen.
KH 1 never presents anything that can't be out DPS'd and even if there is there are 2 spells that will fix that being Aero which below halfs the damage you take for a pretty long time and cure which because of the battle system, you'll get the MP back for both of these skills before you'll ever need them.
So for the most part it's mashing X.
KHcom/re:com
You make a deck of 20 9's and 5 0's and you're set or just make a deck of Ars Arcanum + the character card that stops you from getting broke, watch as you kill in 5 Ars for most of the game, this is a cool concept but not enough thought is here.
KH2
Game has such long and damaging combos that you can beat any enemy encounter by mashing attack and you'll fly around more crazy then in a DMC style video.
Then for anything challenging you just spam the easy access reflect that fucks up everything in this game, like it's not even a joke, it holds out for long combos and nothing in the game beats it, absolutely disgusting.
KH 358/2
Hey Lets advertise our game as you can play as the antagonists then make it so outside of multiplayer you can just play as this fuck boy who mashes attack and spams limit breaks with the worst padding I've seen in a game series since persona 3 and 4 managed to make me loop going from school to my bed room repeatedly 20-30 times till I can play the game.
Birth by sleep
Closest to good game but it's broken since one of the magic skills you can easily obtain within an hour of the game as each character is bugged to do stupid amounts of damage and this was never fixed in any final mix version, when you get to the known hardest superboss and proceed to instantly kill him you wonder where the devs went wrong.
RE:coded
Again retardedly easy but at least this one is goofy to look at since all the attacks in the command deck have 0 recovery so you lunge from attack to attack super fast which is a laugh but it has the worst level design in all the games where it itself feels like padding to the boss fights.
Dream Drop Distance
Main character Sora is a fucking retard the whole time and it pisses me off that after this game he's still the main character.
As for combat it's a dumbed down Birth by sleep with a pretty to look at free running like ability that offers alt attacks that are all worthless for anything above normal since they take forever, do eh damage and don't have I frames.
Story is worthless as it all means nothing but what happens to certain characters at the end because it's all a dream, if you complain about spoilers go fuck yourself because it's in the title, even the enemies give it away with their name, Final boss is a model rip from BBS too, it's not meant to be but it's obviously because it's in a stance only he had.
Fuck the hacks who make these games and fuck the people who think the gameplay in any of these are good, you are all the reason Action RPG's like FF15 is turning out to be 1 button mashing trash, because they know you'll eat it either way and say it's good.