Version 2.5 of the Unity game engine and authoring tool has finally been released and is now for the first time available on Microsoft Windows too.
Unity is the engine I've used to develop the Locomotion System with. Unity is gaining popularity like mad these days and has been used for so many cool games for Mac, Windows, web browsers, iPhone, and Wii.
Besides Windows authoring support, Unity 2.5 primarily bring improvements to the authoring tool, including a fully customizable tabbed interface and improved support for creating custom editor windows.
I also work for Unity Technologies now, and we'll be proud to show off Unity at GDC 2009. We'll be in booth #5110 in the North Hall.