Is it possible to use C++ with Unity instead of C#?

The title kind of says it all. Is it possible to replace C# with C++ on a game using Unity?

Answer

It is possible to use C++ with the Free version of Unity, although it is easier to work with if you have a Unity Pro license. All you have to do is wrap it up in a DLL and follow the instructions below on where to place it.

I wrote an article that covers this topic: Unity and DLLs: C# (managed) and C++ (unmanaged)

For Unity 4 Free:

• Add unmanaged code to the Unity Project Root: UnityProject


• Add managed code to the Plugins folder: UnityProject->Plugins


• When you build a project, copy the unmanaged code to BuildRoot->Data->Plugins

For Unity 4 Pro and any Unity 5:

• Just copy the DLLs into UnityProject->Plugins

Unmanaged means C++ and Managed means C#