Halo vs. FF
Well, game-wise the final fantasy series has usually delivered when it comes to story (I say "Usually, because I have not played every FF, Just 3, 7, 8, and 9). Halo the game, As I have played (Which isn't alot but I've watched a lot of people play), Kinda skips on story. Not that it's a bad thing, Many FPS kinda skimp on story because most gamers are in it for the action. But I have not read the HALO books, I figured they were a novelization of the game. But that's just my thoughts.
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Okay you are gonna get a hole crap load of people saying "Halo pwns FF" and "FF ownz Halo" but does that shit really matter?
I have played EVERY Final Fantasy Game (own most of them), Watched (and OWN) both Movies and also part way through the series.
I am a huge Final Fantasy Fan but if you really want to know before you buy think of this. Rent both and take that into consideration.
Final Fantasy has 13 games that are available for PS to PS3 while Halo has only 3. Final Fantasy is much more rounded and has a larger back bone than Halo but Halo is the hit of the last 3 years. but in all fairness I cannot push either on you. I could say get this or that but again that is judgmental. I do not know what type of games you like to play.
So judge for your self. If you like RPGs get Final Fantasy, if you like FPS's get Halo.
That is all I can really say.