http://stackoverflow.com/questions/18225126/how-to-use-git-for-unity-source-control
The following is an excerpt from my personal blog .
Using Git with 3D Games
Update Oct 2015: GitHub has since released a plugin for Git called Git LFS that directly deals with the below problem. You can now easily and efficiently version large binary files!
Git can work fine with 3D games out of the box. However the main caveat here is that versioning large (>5 MB) media files can be a problem over the long term as your commit history bloats. We have solved this potential issue in our projects by only versioning the binary asset when it is considered final. Our 3D artists use Dropbox to work on WIP assets, both for the reason above and because it'smuch faster and simpler (not many artists will actively want to use Git!).
Git Workflow
Your Git workflow is very much something you need to decide for yourself given your own experiences as a team and how you work together. However. I would strongly recommend the appropriately namedGit Flow methodology as described by the original author here.
I won't go into too much depth here on how the methodology works as the author describes it perfectly and in quite few words too so it's easy to get through. I have been using with my team for awhile now, and it's the best workflow we've tried so far.
Git GUI Client Application
This is really a personal preference here as there are quite a few options in terms of Git GUI or whether to use a GUI at all. But I would like to suggest the free SourceTree application as it plugs in perfectly with the Git Flow extension. Read the SourceTree tutorial here on implementing the Git Flow methodology in their application.
Unity3D Ignore Folders
# =============== #
# Unity generated #
# =============== #
Temp/
Library/
# ===================================== #
# Visual Studio / MonoDevelop generated #
# ===================================== #
ExportedObj/
obj/
*.svd
*.userprefs
/*.csproj
*.pidb
*.suo
/*.sln
*.user
*.unityproj
*.booproj
# ============ #
# OS generated #
# ============ #
.DS_Store
.DS_Store?
._*
.Spotlight-V100
.Trashes
ehthumbs.db
Thumbs.db
Unity3D Settings
For versions of Unity 3D v4.3 and up:
- (Skip this step in v4.5 and up) Enable
External
option inUnity → Preferences → Packages → Repository
. - Switch to
Visible Meta Files
inEdit → Project Settings → Editor → Version Control Mode
. - Switch to
Force Text
inEdit → Project Settings → Editor → Asset Serialization Mode
. - Save the scene and project from
File
menu.