The company was actually founded in Denmark, but has since expanded around the world with just two products: Unity Pro and Unity iPhone Pro. The second product, as you might imagine, allows developers to put together an application that can then be exported out into an Xcode project and released on the App Store. Higgins said that they've had over 90,000 people download the software since it was released for free last fall, and that more than 500 games in the App Store were authored by Unity.
He also ran a short demo of the software at the panel. While some of the coding got a little technical (the system allows you to create and change variables on in-game objects even while the game is running in the engine), the coolest feature was the way they simulated iPhone controls: by using a real iPhone as a remote. They've released a free app on the App Store that will connect via Wi-Fi with a copy of the development tool running on your Mac, and as you touch and turn the iPhone, the editor reacts, and sends the (slightly lower resolution) output to the iPhone's screen. You can also make changes to your code as the game runs in that mode, so you can be playing and coding at the same time.