Unity engine and some IDEs used by Unity developers create a bunch of temporary files in your project, which you don't want to keep in your repository.
Also while developing games in general, you will have some binary files and assets in your projects, which you need to keep in your repository; but Git is not particularly good at handling large binary files on its own.
These problems can be solved by using a proper .gitignore file, and using Git LFS (Large File Support) extension with the proper .gitattributes file, both of which are provided in this project.
This repository is a template, which you can use to create new repositories from, and start developing your Unity games!
Git LFS is an open source extension for Git, which improves Git's behavior regarding large binary files. It replaces large files such as audio samples, videos, datasets, and graphics with text pointers inside Git, while storing the file contents on a remote server like GitHub, GitLab, or BitBucket. This is extremely handy for game development, since your local repository size will remain significantly smaller, and Git operations will be much faster.
In order to use Git LFS, you will need to install it first. Download the latest client from git-lfs.github.com and install it.
Just create a new repository from this one. Alternatively, copy .gitignore and .gitattributes files and put them in the root of your Unity project. If you don't have Git initialized, run git init. Your project folder should look like this:
After adding the Git files to your project, set up Git LFS and its respective hooks by running:
git lfs install
Open your project in Unity, and go to Project Settings > Editor. Make sure Version Control mode is set to Visible Meta Files, and Asset Serialization Mode is set to Force Text.
You are all set!
If your project needs new file types covered in either of the .gitattribues or .gitignore files, chances are other people will need them too. By creating a pull request with your modified file(s), you will help them out.