Folks have been complaining about Mouse functionality (or lack there of) for years now. I think it's about time we put this one to rest. Most recent post: http://forum.unity3d.com/viewtopic.php?p=272463 I'm developing desktop applications and I can't manage the mouse so the user does not accidentally click outside of the window, or snap the mouse to a point or button (smart mouse), or a whole host of other mouse control problems. Of course there is the plugin fix, but this needs to be native so we can be compliant cross-platform (Mac vs Windows). As a development application, it is essentially a requirement to have full control over all inputs and outputs of the game and API. PLEASE, let's finally get this fixed up.