BLASPHEMY!!!!!!

I'm not really sure if I can answer this, as there are some genres I just really like and can't decide on. So I'll just give 3 examples of genres I like.

Platformers

- Super Mario World
- Kirby Super Star
- Mega Man X

JRPG

- Chrono Trigger
- Earthbound
- Grandia 2

Survival Horror

- Fatal Frame 4
- Silent Hill 2
- Resident Evil 0

3D Platformer

- Mario Sunshine
- Banjo Kazooie
- Bomberman 64

Um, jRPG, I guess, I'd like to not have to distinguish between the 2 but most AAA RPGs made in the west I find extremely unappealing and generic. So I guess this would be it, I think:

Undertale (Does this count? it's made by an american so I dunno)
Paper Mario
Kingdom Hearts 2 Final MIx (This counts, right? Or is ARPG another genre?)

Another genre I enjoy just as much but for entirely different reasons would be technical brawlers like the likes of DMC, MGRR, Bayonneta, and KH2 Final Mix...? Genres are a fickle thing my friends.

Platformer

DKC
DKC2
SMB3

Hack and Slash
Bayonetta 2
Darksiders
Metal Gear Rising

Adventure RPG

1) Kingdom Hearts
2) Pokemon
3) Witcher3/Skyrim

Nothing beats these. Absolutely Nothing!

JRPG hack and slash type of games(MAIN REASON I'M LOVING NieR)

Phantasy Star Online Serie
Crisis Core: Final Fantasy VII
Tales of Symphonia

J-RPGS:

-Dragon Quest 8
-Xenoblade Chronicles
-Kingdom Hearts 2/Birth by Sleep (hard to choose between the two)

Action-Adventure:

-Zelda Ocarina of Time
-Zelda Majora's Mask
-Zelda Twilight Princess/Skyward Sword (again, hard to choose between the two)

Open world (vehicular and shoot/stab)
GTA V
RD Redemption
AC

Platformer - Adventure
Metroid Series

Fighting
Killer Instinct

RTS:

C&C Red Alert 3


Supreme Commander: Forged Alliance


Planetary Annihilation