Unity 3D with Oculus Rift?

Hello,

I have the Oculus Rift and I wonder if it can integrate with Unity 3D or I need
another version of Unity for this? like Unity 3D 4 PRO ?

Is it just a dll file that should be included in Unity 3D ?

How can I integrate Oculus Rift with Unity??

I’m pretty sure it requires Pro-only features (in fact, didn’t your OR come with a Unity Pro trial licence?)

It’s a Pro-only feature as it requires interaction with a DLL, basicaly you have to download an Oculus rift sdk for Unity integration from https://developer.oculusvr.com/ and you can add an OVRPlayerController prefab to a scene to make your Oculur work. You can also see the example unity package included in SDK for more details.