A cube primitive.

	// Creates a cube primitive
	function Start () {
		var cube : GameObject = GameObject.CreatePrimitive(PrimitiveType.Cube);
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Start() {
        GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Start() as void:
		cube as GameObject = GameObject.CreatePrimitive(PrimitiveType.Cube)