The free version of the Unity development engine provides all the core functionality needed, right out of the box, to develop great interactive content. Assemble your game from art and assets, add interactivity, and publish your final work to iOS, Android, desktop computers and the Web.
You also receive a 30 day trial of Unity Pro with your free license. Activate your trial at your convenience and get a taste of the full power, performance and polish of Unity Pro.
If you have any questions, please contact firstname.lastname@example.org.