Can someone please come out with a Final Fantasy Historia, connecting all the games to one another in a timeline somehow? That would make me want to play each of them like Hyrule Historia did for Zelda haha.

I'm currently on my first Final Fantasy experience. I've almost beaten FFVIII and I am enjoying it more than I thought I would and way more than I did at first.

Nearly all FF games are distinct entities in their own world and universe.

Exceptions are direct sequels like X and X-2, XIII and XIII-2 and XIII Lightning Returns.  FFXII inhabits the same world as FF Tactics.  Then there is FFVII: Crisis Core, and FFIV: After Years.

What kinda connects them are recurring names such as Cid, Biggs, etc.  Also the summons and spells throughout all the series.

However, a there has been some ret-conning going on as well.  FFIV: After Years attempts to pull FFI through FFIV together though I didn't buy it much.  There's the Dissidia stuff but I would ignore it.

The prevailing theory is that all the FF games are part of the same multiverse with a few events in games hinting at this.  That's about it.

Oh and then there is this:

Who know? They claimed FFXIII have 3 parts? The result: need total 3 games to complete the FFXIII saga. Seem correct to me.

Same nonsense happened with KH3....Square has lost all sense of reality with gaming production. No way it should take this long.

Theres articles from SE stating the name change happened when it changed gens. So thats 2012-2013. 

KH3's trailer was that it was in development and showed a CGI trailer. So yes I can tell you that because its in the KH3 Ultimania. Sorry these are the facts.

I only hope it doesn't play like ff xv. If it does, nostalgia wont even be enough for me to buy this game.

So, according to your facts, renaming a game removes and all work on the game done in the years before from existence? Okay...

Of course KHIII was in development at the time, I'm not disputing that. What I'm disputing is that they only started working that very year on it, yet already were able to deliver that trailer for E3. 5 Months maximum from concept start to E3 trailer, that's just too short in my opinion. I think they must have started working on ideas for the game in 2012 at the very least.

Where did I say this? I said they restarted development. What work was exactly done to FFvsXIII? They said in interviews it was less then 25%. Not much work went into the game from 2006-2011. So they restarted development in 2012. 

That trailer for E3 was CGI. So yes they very much could have just started on the game that year. You understand how easy CGI trailers are right? Big game devs do them all the time. Look at Anthem. Same thing happened. Bioware didnt know what they were making and the trailer at E3 was their target and project to make. They showed the trailer before they even had a solid idea on what to do with the game. Ubisoft with Watchdogs 1 and the massive downgrade when it released. Companies can make these trailer quite fast. Hell even FF7R was a concept trailer. But yes thats not to say they werent in the planning stages for KH3 in 2012 seeing as DDD just released.