(Ethan's List of the Top Ten Games Ever: Yes, His List is Better Than Yours)
Alright, so this is a bit of a cheat as I'm placing both main entries from a series in the same slot.
Number 4 - The Kingdom Hearts SeriesAn emotion-packed, ass-kicking, and suprisingly complex series, Kingdom Hearts defines the modern action-RPG genre.

While the series admitedly has a long way to go before it approaches the realm of near-perfection, it gets a lot of things right.
Firstly, the original pioneered some great scene direction in video games; the first scene in which you meet the villains is beautifully set up.
Which brings me to the point of mood. Truly the aspect of a game that makes it stay with a person, what makes them want to sit down for hours and never let it go.
And while some may write off Kingdom Hearts as shallow due to the Disney worlds, the series is actually beginning to tell some interesting stories of innocence and experience. While the first game encapsulates childhood wonder and dedication, the second game brings in doubt and darkness, loyalty and love. Unfortunately the Disney worlds feel less cohesive in the second game and the Sora story and the Disney worlds start to feel like seperate stories instead of the impressive way the first game melded it all together.
But in both cases, magic is very present and when the story-telling is powerful in KHII, it is very powerful, drawing you into the minds and struggles of the confused youth.
Beyond themes, the game plays like beautiful crack. The first game focused on fun and strategy while the second upped the ante on incredible animations and combos while unfortunately watering down the gameplay.
What needs to be taken from the epic experience, however, is the powerful story that drives the series. Not the plot, necessarily, but the themes and the attention paid to relationships and not just situations. For the latter is either ignored or not dealt with properly in too many games.
I'm excited to see how Sora grows up next.
Agree with me yet?
Speaking of mood, the next game on the list is a thematic masterpiece.
_ethan