January 28, 2014 10:59 AM EST
Well, there are cases of games (WoW for example) where people refer to vanilla as a pre-dlc content.
Also excerpt from wiki about Vanilla software could be used as an example:
"In computer games the term "vanilla" is often used to describe the original version that has not been modified with third-party addons, nor developer updates or patches. It can also refer to the original game engine when source ports or expansion packs are available"
It looks like thats the general consensus, but it doesnt mean that everyone must agree of course