Can someone explain Civ Vanilla to me?

[Calibos]

I've seen this thrown around a lot on these forums and i'm now becoming quite curious as i've been on a Civ IV marathon recently and would like something new until V is released. So I was wondering if someone could briefly explain what is it exactly? Specifically:

What changes can I expect from Civ IV? I've got some info but a lot of searches relate to patch updates rather than informing me of the content.

Are there many improvements / flaws when compared to the original? A simple "It's better" or "It's shi**er" will suffice.

If I downloaded, installed, and didn't like Vanilla, would I be able to revert back to CivIV with minimal fuss? (I.e. Not install it all again).

Where would I be able to find the most recent patch/download/edition?

Sorry for asking, i'm sure it has been answered already. Please forgive me

[Blaupanzer]

Generally, Civ Vanilla is a reference to Civ IV without the two upgrades. Most of us play BTS, but a few still play the original, called "Civ Vanilla." Most of your other questions answer themselves in light of this answer. BTS is a whole 'nother game, much superior to the original Civ IV.

[Calibos]

Really? Boy do I feel stupid - i'd like to thank the 31 visitors for not pointing out my own ignorance

Guess i'll have a look at BTS and see what that has to offer

[Ming]

Nahhh... no question is stupid (unless you ask it multiple times )

At CFC, you probably would have taken tons of abuse... here, somebody will usually answer your question eventually.

And yes... BTS is by far the best Civ Version ever. Give it a try.

[Calibos]

I played it all weekend. It is soooooo much better