FireBlox is a system of GUI's set up to allow you to browse what I call the FireBlox Net. What is the FB Net, you ask? I will explain. The FB Net is a way of connecting levels together through models. Basically, there is a model with information in it, and the FireBlox Explorer will collect that information and make it available in game. I have a model with the "FireBlox Net" inside it, and this FireBlox Net Explorer will let you access the information there. Make sense? Get the FireBlox Explorer bar here: http://www.roblox.com/Item.aspx?ID=19050745