There are no strings attached, no royalties and no license fees. This is just an extension of Unity Free which we launched in 2009. Individual developers and startup studios can simply download Unity and get going on mobile game development. As before, companies and other incorporated entities (you know who you are) with a turnover in excess of $100,000 in their previous fiscal year are required to use our paid version. That way, we can keep the lights on and continue to make Unity better for everyone.