Build options
Unity offers you an array of differing build platforms to choose from, and when considering your work as a Unity developer, you should rest assured that as a product, Unity will continue to add new build options as different hardware and software platforms emerge.
The current build options are contained in Unity's Build Settings window, which looks like this:
Let's take an overview of what these different options are, before looking at the parameters available for building to them.
Web Player
When placing any plugin-based content onto the Web, it must be uploaded as a bundled file which calls the installed plugin. Viewers of Unity's web builds will be required to download the Unity Web Player plugin for their browser in much the same way as, for example, Adobe Flash content requires users to download Flash Player. The Unity Web Player is available for download at http://www.unity3d.com/webplayer.
But if your player attempts to load your game without it installed, they will be prompted...