Final Fantasy 14: Shadowbados! It's an MMORPG! It plays a lot like WoW but with an actual story, with like... characters, and dialogue, and a plot that makes me like the writers instead of hating them! How novel!
Coming in 5.3, among many, many other things such as a streamlined main story quest in the original base game content:
The free trial content is being expanded from the first half of the base game to include all the base game plus the first expansion. That's a large, very good slice of the game you can play for free without buying anything.