Hey, I have a question, how can I add custom mouse cursors inside a Unity Game? Any help would be appreciated.
That should list everything you want with further links towards GUI this and that. Better to understand how it’s working so you can do what you want with it, rather than just copy/pasting code from someone.
This isn’t entirely accurate. Firstly, OP asked about doing a custom mouse cursor in game. The link you provided is part of the UnityEditor assembly and therefore isn’t included in any build. Secondly, this only provides you with mouse cursors recognized by the OS and I would imagine OP was asking about making their own cursors.
The correct approach is to disable the OS mouse cursor and draw a texture at the mouse position.
http://docs.unity3d.com/Documentation/ScriptReference/Input-mousePosition.html
http://docs.unity3d.com/Documentation/ScriptReference/GUI.DrawTexture.html