Recently I already finished a game.I want to publish it in the website.In the testing the game is ok,no error,no any warning message.Look's it's perfect.But I want to publish it in website so many Error and warning.The usually message is "NullReferenceException:Object reference not set to an instance of an object".But in the testing not get me these messages.Please help me.I'm in a hurry!!!!!
There are various options. One of the simpler ways is with dimeRocker Arcade, which gets you onto Facebook. See this thread for more details.
http://forum.unity3d.com/threads/67821-dimeRocker-Arcade
dimeRocker has a revenue-sharing arrangement where you can publish "for free", but then you give them a share of your revenue later when it starts to come (assuming it does ...) One benefit of the dimeRocker Arcade is that it is a single facebook application, which then hosts your game -- so the existing users of Arcade will automatically get access to (and notification about) your game without having to grant your new app any special access.
(Disclaimer: I'm not affiliated with dimeRocker, and yes, there are plenty of other good ways to get published. Also, I believe dimeRocker Arcade is still in beta testing.)