I can name probably my top ten RPGs, but I won't name them in order, I will put numbers in front for ease of reference:
1: The Elder Scrolls III: Morrowind I've played pretty much every TES game to some extent and enjoy them, I've logged 700+ hours into Skyrim on Steam, probably an equal amount in Oblivion, and Morrowind, but Morrowind had the added benefit of being the most nostalgic since it introduced me to the series at a time when I was craving freedom in a game (now known as sandbox). Morrowind also has the best storyline of the series, which is saying a lot considering it took me over 100 hours of playing the game before I finally decided to do the main quest at all (it does have it's slow moments). Overall though, Morrowind taught me what games could be and I loved it. I still remember the sheer unadulterated joy at such a small accomplishment of realizing that even mountains were no longer impassable objects and I could just leap and jump my way over them.
2: Baldur's Gate II I'm gonna stick with one entry per franchise here. Baldur's Gate II took an already fantastic game such as Baldur's Gate and made it better in every possible way, story, exploration, characters, combat, skills, UI, it was all improved in this and I still love playing it to this day (albeit the Enhanced Edition)
3: Final Fantasy XII I love open world games, and I love story driven games, and I love games that make grinding fun and interesting, and I love games that give you tons of ways to distract yourself if you decide to take a break from the main plot. FF12 is the ultimate realization of that in a Final Fantasy game. Each region is huge with multiple areas, interesting enemies, and varied landscapes. The look and feel of the game is wholly unique and I've never seen another game go so wild with it's visual aesthetics (just look at Rabanastre's architecture). The real gem of the game for me though is the great combat system that has a well thought out AI auto-pilot, but also incredibly complex and challenging bosses that you have to take control over to really bring down. I'm really crossing my fingers the remaster hits PC like the other remasters did!
4: Dragon Quest 8 Why do I still keep my PS2 plugged in? FF12 and DQ8! While I love some all the games in the Dragon Quest series with varying degrees, 8 is the top dog because it does everything really excellent! Awesome characters, fantastic graphics, and amazing variety of things to do!
5: Legend of Mana Once again, I'm won over by non-linearity and fluff. This is a running theme. I love this game because it just has so much freakin' stuff to do in it! Capture monster eggs and hatch them into companions, build weapons, build armor, build magical instruments that cast spells, build golems to fight with you, raise a garden, train your apprentices, go on 3 main quest arcs or numerous smaller side arcs, layout your own world map, discover new combat combos, fight tons of awesome huge bosses, meet tons of interesting characters, flesh out a plethora of encyclopedias, train with a huge variety of weapons... slap a big gorgeous watercolor paintjob on it, and there you have it!
6: Earthbound While this game does have some freedom and openness to it in some ways, what attracts me to it most of all is it's a wholly unique setting never done in quite that same way before or since. The tongue-in-cheek modern Americana setting is fabulous and it bleeds into every aspect of the game. The fact that game is so heartwarming just adds to it.
7: The Witcher 3 I had to take a 6 month hiatus from the game after the expansions were finally released just because I don't want this game to end, it's like putting away the last slice of cheesecake on a bad case of the munchies knowing you want to savor and enjoy it's flavor at a later date. Everything about this game is crisp goodness!
8: Mount & Blade Warband A RTS/Simulation/RPG that doesn't skimp on any one of it's mixed genres and instead provides an awesome robust game where you can roleplay however you want aspiring to greatness and becoming king, or being content as a humble merchant, or being a female bandit with your all female crew of warriors who raids up and down the coasts.
9: Suikoden II I remember when video games first made the jump to CDs, me and my dad were talking about how awesome it would be to see a game with the same kind of 2D graphics as what the SNES had, but used all that extra space on the disc purely for content, instead of pre-rendered backgrounds and 3D Models. While Suikoden II's graphics blow away anything on the SNES, it is without a doubt one of the most awesome RPGs of the PS1 (which is saying a lot from someone who loves PS1 RPGs) I loved it's very politically charged and dramatic storytelling mixed with it's colorful world filled with cool things to find and collect (including people)
10: Super Mario RPG I get it, it's designed specifically around the capabilities of the SNES with it's isometric view, and around the action-based Mario games with it's platforming level design but why... oh WHY has there never been another game to copy what this one did? The way you moved on the game's maps was genius, a fun exciting fixed isometric platforming game, and then you combine it with turn based battles? Oh sweet jeebus! I love this game and still play it regularly today!
Honorable Mentions (Seriously I'm only gonna mention 'em)
Fallout 4
Dragon's Dogma Dark Arisen
Dungeons of Dredmor
Chrono Trigger
Shadow Madness
Dark Cloud
Dragon Age Inquisition
Ultima IV: Quest for the Avatar
Stardew Valley
Harvest Moon: Magical Melody
Secret of Evermore