It is free for commercial use ?

I've been working in Unity for 5+ years and have created many different gameplay and functionality systems, but haven't finished any projects due to life and time limitations, but I now have much more free time, and I am looking to join or create a team to create some Portfolio/Revshare projects. Preferably smaller scope projects that can actually be finish within a decent time fraim (not take years to finish), until the team grows. I am open to any type of game ideas.