It is the variant of Zombie Shooter game with different game mechanics. It posses the random movement of a magical glowing butterfly in front of player. Player's hand will glow only when following the glowing butterfly. In this way, it is used to enhance the motor skills of person affected with hemiplegia. 

CODE

Below code supports the mechanics of glowing butterfly and interaction with it.

public class TriggerBallController : MonoBehaviour
{
    public float range;
    public float moveSpeed;
    private Vector3 targetPosition;
    public SkinnedMeshRenderer butterlyRenderer;
    ParticleSystem FiretoZombie;
    public AudioClip fireSound;
    AudioSource zombieSoundSource;
    GameObject Zombie;

    int hardlevel;
    int easylevel;
    int normallevel;
    void Start()
    {
        
        easylevel = 20; normallevel = 10; hardlevel = 5;
        
        SetRandomTargetPosition();
    }
     
    void Update()
    {
        
        MoveTowardsTarget();
        if (Vector3.Distance(transform.localPosition, targetPosition) < 0.01f)
        {
            SetRandomTargetPosition();
        }
    }

    void SetRandomTargetPosition()
    {
        targetPosition = new Vector3(Random.Range(-range, range),Random.Range(-range, range));
    }

    void MoveTowardsTarget()
    {
        transform.localPosition = Vector3.MoveTowards(transform.localPosition, targetPosition, moveSpeed * Time.deltaTime);
    }
    private void OnTriggerStay(Collider other)
    {
        Zombie = GameObject.FindWithTag("Zombie");
        ZombieController zombieScript = Zombie.GetComponent<ZombieController>();
        FiretoZombie = Zombie.GetComponentInChildren<ParticleSystem>(true);
        zombieSoundSource = Zombie.GetComponent<AudioSource>();
        if (other.CompareTag("PlayerHand"))
        {
            SkinnedMeshRenderer handRenderer = other.GetComponent<SkinnedMeshRenderer>();
            handRenderer.material.color = Color.yellow;
            handRenderer.material.EnableKeyword("_EMISSION");
            zombieScript.health -= Time.deltaTime * easylevel;
            if (!zombieSoundSource.isPlaying)
            {
                zombieSoundSource.PlayOneShot(fireSound);
            }
       
            Debug.Log(zombieScript.health);
            if (!FiretoZombie.isPlaying)
            {
                FiretoZombie.Play();
            }

        }
    }
    private void OnTriggerExit(Collider other)
    {
        if (other.CompareTag("PlayerHand"))
        {
            FiretoZombie.Stop();
            SkinnedMeshRenderer handRenderer = other.GetComponent<SkinnedMeshRenderer>();
            handRenderer.material.color = Color.white;
            handRenderer.material.DisableKeyword("_EMISSION");
            zombieSoundSource.Stop();

        }

    }
}