Not a bad top 10, apart from Mass Effect sticking out like a sore thumb. Game had a lot of promise, fantastic soundtrack, an interesting setting and backstory, but everything gameplay-wise was clunky - the battle system felt 'off', performance issues abound, extremely repetitive side missions. Of course, they threw the baby out with the bathwater with 2 and although it played MUCH better, it did that by turning into a middling cover-shooter with dialogue options. And one of the worst minigames (mining for minerals) ever.
I'm upset that no Phantasy Star games made the top 30. People need to get on that... Ditto for no Dragon Quest, Ys, Ultima, or even Deus Ex (which I thought was considered universally acclaimed from PC gamers)
Other random thoughts:
-Gotta play past at least the first sections of Demon/Dark Souls
-Gotta play Fallout: New Vegas and Baldur's Gate 2. I'm not huge into western RPGs but I did manage to beat Fallout 3 and Planescape: Torment
-#16, with Thousand Year Door, is the first position with a game I don't own already
-Don't own Vampire or Divinity: Original Sin either. Not sure if either are my type of games...
-The main games from this list I want to play are Fire Emblem: Awakening (shocked how well it did), one/any Pokemon, and give Nocturne another go now that I actually understand how to play SMT games
