What is the best way to run a project in Unity?

Question

Unity

Good!
Tell me the options, because did not encounter at all. I want to make a project on Unity with another person, one writes the code, the second draws graphics. Geographically, we are located in distant cities. Is it possible and how to lead the project together? Those. I write code, if everything is fine, then the artist receives the project and finishes the graphics, so when he finishes, I can see the result.
Unity Personal installed

Answer 1

Git + Github / Bitbucket and you will be happy.
Just look at what needs to be added to the .gitignore file.

Answer 2

I will join everyone who mentioned about git.
In addition, it is better to draw graphics first, and then the developer will implement them together with the finished graphics.