Unity 5.6 - "The type or namespace name `Rigidbody2d' could not be found. Are you missing an assembly reference?" when using AddComponent

Questions & Answers
1

I’m trying to add a Rigidbody2d component to an Object, in code, and I’m getting this error:

The type or namespace name `Rigidbody2d' could not be found. Are you missing an assembly reference?

This is my code:

      Rigidbody2d myRigidbody = gameObject.AddComponent<Rigidbody2d>() as Rigidbody2d;

These are my using directives:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

I’m using Unity 5.6.1f1

2

Rigidbody2D instead of Rigidbody2d. Don’t you use an IDE with intellisense / autocompletion?