Okay, this isn't in any particular order. I love all these games to death, and it would kill me to favour any over the other.
MOTHER 3 (GBA) - When I discovered Earthbound, I was instantly charmed. Of course, I discovered Earthbound when I was in Grade 6, which was pretty late(in my opinion). ...But, I played it all the way through and loved it. It was amazing. When I discovered that there was a sequel that was never released in English, but had been fan translated, I jumped at my opportunity to play it! It's definitely one of the most brilliant and clever RPGs I had played, especially since I hadn't played that many back then. It has a special place in my heart, even if I don't play the MOTHER games very often at all, anymore.
Tales of Symphonia (NGC) - I blame Tara/BinaryPeaches for this. xD;
When I returned to PC early last year, I met Tara through DLTMS0. She told me about this really awesome RPG she was obsessed with called Tales of Symphonia... and hey, I love RPGs, so I decided to try get my hands on a copy somehow and play it through. So I did. It was fantastic. The battle system was fun and fast paced, the characters were all lovable and hilarious, I loved the art style, and the game was just so vibrant and filled with joy. I've yet to own a copy for myself, but I really hope I'll be able to soon. I've been dying to replay it.
Persona 4 (PS2) - Despite the 3 hour introduction, Persona 4 is a game everybody should play. What I love about this game are the strong morals it holds in it. It teaches lessons such as accepting who you are, and how important your friends are. I really like what they did with Persona 4, because a lot of teenagers are bound to play the game. A lot of people have things they hide and push back about themselves, especially teenagers. That's why I love Persona 4. It deserves the fanbase that it has, because it's such a strong, strong game. Anyway, all the characters are ones that are likable and can be related to in some way. Heck, it even tells you that it's okay to be gay. Your true friends will accept you for that. I only played Persona 4 this year, but I don't regret a moment. Also, the dungeon crawling and social link aspects of the game are damn addicting.
Lunar Legend (GBA) - Now, I have never played the original Lunar game. But... I can safely say that this game was a really good port on it's own. Although I hear it really deviates from the original, it was a game I played in Grade 3, and also my first true RPG. I don't really have too much to say, to be honest. xD;
It was a major part of my childhood, and that's all there was to it.
Super Mario Galaxy (Wii) - No other game blew me away in terms of atmosphere than Super Mario Galaxy. It had amazing, extremely inspired worlds(or should I say, Galaxies), an absolutely mind blowing orchestral soundtrack, and even a really nice backstory for a Mario game. No other platformer has ever inspired and left me in awe as much as Super Mario Galaxy. I spent many hours with this game, and ever since playing it, I use it a lot as an example of a masterpiece game.
Pokemon: Explorers of Sky (NDS) - I've always thought highly of the Mystery Dungeon Pokemon games, and even like them more than the mainstream Pokemon games. They were the first games to ever make me drop a single tear, admittedly. Both of them. This game in particular was the best, all around. I already loved Explorers of Time, especially the story. So... when I heard an enhanced version was being released, I was extremely excited. No surprise, this game lived up to it. I can't get over how fun the dungeon crawling, mission completing action is, and I really hope a Mystery Dungeon: Black and White gets announced.
Ace Attorney (NDS) - I'm cheating a bit, but I'm going to feature all four main games here in general. In my opinion, it's hard for each one to be complete without the other. As a whole, it's a fantastic series. Shu Takumi put in a really unique charm into the Ace Attorney series, and it shows. The many different unique characters and their many different expressions, the compelling story that ties to all the characters you love, the absurdity that the fact that all the cases you get are murder cases. All of these make up the Ace Attorney series. Oh, and that extremely satisfying feeling you get when you find those contradictions in testimonials. Ohhh, yeahhh.
Mega Man Zero Collection (NDS/GBA) - Again, I'm cheating a bit. I played all these on the GBA, and they were also my first Mega Man games. What really attracted me to these games was the art style, and the soundtrack. I have a deep love for both. They were definitely hard games when I played them, but I was really determined to beat them. I also really love the character designs. Amazing stuff, in my opinion.
Pokemon Crystal Version (GBC) - Pokemon Gold was my very first Pokemon game. I never really owned the game myself, only being able to play it at my cousin's place every week. Even so, I really liked the game. It was always a joy to be able to play it, especially since I was a big fan of the anime. A couple years after, I got my hands on Pokemon Crystal. Even though it was on an emulator, I still treated it like I would any genuine game. I loved how the game featured Suicune, I loved the Pokemon animations(and was confused about why Ruby or Sappire didn't have them), I loved how they gave you the option to choose between Male or Female, I loved everything about it. In general, I've replayed the Johto games multiple times, but my run through Crystal was definitely the best.
Final Fantasy Tactics Advance (GBA) - My cousins introduced me to this game, and when I tried it out, it was awesome. I can't tell you how much fanart I drew of this game as a kid, and heck, I even wrote an adaption of the story. It was very good, but hey, I was in Grade 4. What would you expect? The idea of a fantasy world within a book seemed really amazing to me, back then. Also, the gameplay itself was amazing. It had great multiplayer, which I loved using with my cousins. I can't get enough of the universe that the game is set in, though. Ivalice. Absolutely stunning. Journeying through this world with Marche and Montblanc, a world that was created through dreams. Beating the bosses and destroying the crystals, meeting your old friends that you lost before you entered Ivalice. Oh, man. It was amazing.
Although there were other games set in the Ivalice universe such as XII, Tactics Advance 2, Tactics, and so on, nothing topped this game. It's my favourite Square-Enix game in general, and a game I will never, ever, forget.