MY favorite games? I haven't played too many, but here are my favorites (no order)
Red/Blue - Classic. My first RPG's.
SMB Deluxe - Haven't played the first SMB, but I have played this (pretty much the same thing, but with LOADS more content).
Gold/Silver - Even better than the first games. Still classic.
Pokemon Emerald - Favorite Pokemon to date.
Super Mario 64 DS - A terrific remake of the classic
NSMB - had lots of fun with it
Super Mario Sunshine - Massive, open, and BEAUTIFUL!!!
MGS: Twin Snakes - a really good game with some great action and story.
Melee: One of my favorite games of all time, the addictiveness is off the charts.
Double Dash - Easily best Mario Kart, so much fun!
Twilight Princess - An open world, massive Zelda that is very good.
Mario Strikers Charged - A very addicting multiplayer sports game.
Super Mario Galaxy - might be my fav of all time, this game is perfection and epicness.
Super Mario Galaxy 2 - just as good, if not better than the first.
Skyward Sword - a revolutionary game with amazing visuals and a great combat system/controls.
SM3DL - the perfect Mario handheld
Fire Emblem Awakening - the best RPG I have ever played, period.
Metal Gear Soild 3 3D - a port of one of the best of all time. This game is realistic, emotional, and very story-driven.
Luigi's Mansion 2 - Wow. This game really takes you into it's 5 mansions on a whole new level.
Mario Kart 7 - the multiplayer makes it one of the best MK games.
Lego Marvel Superheroes - an extremely fun LEGO game filled with my favorite Marvel characters. It's great.
Ocarina of Time 3D - the classic of time.
Star Wars Battlefront 2 - the most addicting multiplayer game I have ever played (PC). I love Star Wars to death, and this game is incredible.
Many favorite games... And many games have you not play, right? Twilight Princess - For Wii or GameCube?
You have play games on: GB, GBA, GC, WII, Pc...