Input.GetAxisとCrossPlatformInputManager.GetAxis

CrossPlatformMoveSphere.cs

using UnityEngine;
using System.Collections;
using UnitySampleAssets.CrossPlatformInput;

public class CrossPlatformMoveSphere : MonoBehaviour 
{
	void Update () 
	{
		// あふたー
		var axis = CrossPlatformInputManager.GetAxis("Horizontal");
		transform.position += Vector3.right * axis * Time.deltaTime;
	}
}

MoveSphere.cs

using UnityEngine;

public class MoveSphere : MonoBehaviour 
{
	void Update () 
	{
		// びふぉあー
		var axis = Input.GetAxis("Horizontal");
		transform.position += Vector3.right * axis * Time.deltaTime;
	}
}