>>315193025
I use git for worlds, and stick blender files in there too. It works well enough even without lfs in my experience, though I don't have a bunch of huge models. THe most annoying part is most unity libraries just drop their shit in Assets, so you have to be liberal with .gitignore.

unity has their own proprietary teams versioning thing but you have to pay for it. I tried it briefly for collab, didn't like it. There is also a 'github for unity' plugin https://unity.github.com/ which might be nice, but I just use git through cygwin.

for pure-blender projects I honestly just use numbered files because it's too much of a hassle to revert to old versions with full git. You end up having to checkout old files somewhere else to compare anyway.