I would have to say as single player games Platform / adventure and casual games. Then for Multiplayer games action, some FPS and all those party style games.
No Super smash bros & Mario Party are not a platform games. Different Mario games fall into different genres. Smash Bros is a fighting game with a hint of others things added in. Mario Party is a Party game.
For me that would be Adventure and RPG. Reason is that these type of games mainly have more playtime and a good story. Besides that i always love the option to customize a character to your needs
I enjoy FPS since thats the main type of genre that got me so into gaming. I also enjoy party games like mario party and adventure games when im looking to go on a journey into a virtual unknown.