How to save data without using PlayerPrefs?

Hello everybody, I read all questions, answers and guides about playerprefs that I could find, nothing helped me, so Im asking if there is another easy way to save data. So you knew what Im trying to do here is my code:

 var controlTexture : Texture2D;
 var controlTexture1 : Texture2D;
 var Score :int;
 var Enemy : Transform;
 var dist:int =1;
 var lost = false;
 var customSkin :GUISkin;
 var highscore:int;
 
     
 
 function start(){
 highscore = PlayerPrefs.GetInt("HighscoreSTR");
 
 }
 
 function OnGUI () {
  GUI.skin = customSkin;
              GUI.Box(new Rect(10,10,150,45), Score.ToString());
              GUI.Box(new Rect(10,60,150,45), highscore.ToString());
 
              
              if (lost) {
               GUI.Box(new Rect(Screen.width/2 -207 ,Screen.height/2 -95  ,420,200),"Well Played!");
               
     if (GUI.Button (Rect (Screen.width/2 -200,Screen.height/2 + 50,150,50), controlTexture)){
     Application.LoadLevel(1);
    }
     if (GUI.Button (Rect (Screen.width/2 +50,Screen.height/2 + 50,150,50), controlTexture1)){
     Application.LoadLevel(0);
     }
     GUI.Label (Rect (Screen.width/2 -20 ,Screen.height/2 -50,500,500), Score.ToString());
     }
     }
     
 
 
 
 function Update () { 
 if (Score >= highscore){
     highscore = Score;
     PlayerPrefs.SetInt("HighscoreSTR", highscore);
     PlayerPrefs.Save();
     }    
     
     
     dist = Vector3.Distance(Enemy.position, transform.position);
         if (dist <=2){
     lost = true;
     }
 
     if (lost){
      Time.timeScale = 0;
     }
     else{
      Time.timeScale = 1;    
 }
     for (var touch : Touch in Input.touches) {
                 if (touch.phase == TouchPhase.Began) {
     if (dist ==3){
     Score = Score + 5 ;
     }
     if (dist ==4){
     Score = Score + 3 ;
     }
     if (dist ==5){
     Score = Score + 1 ;
     }
     
     }
     }
     }