diff --git a/Assets/Prefabs/Canvas_UI.prefab b/Assets/Prefabs/Canvas_UI.prefab
index af2dc72..5dcfe08 100644
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diff --git a/Assets/Prefabs/Player.prefab b/Assets/Prefabs/Player.prefab
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diff --git a/Assets/Scripts/CannonScript.cs b/Assets/Scripts/CannonScript.cs
index 8b2e0b6..f4f8f52 100644
--- a/Assets/Scripts/CannonScript.cs
+++ b/Assets/Scripts/CannonScript.cs
@@ -2,6 +2,7 @@ using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.InputSystem;
+using UnityEngine.EventSystems;
 
 public class CannonScript : MonoBehaviour
 {
@@ -12,6 +13,8 @@ public class CannonScript : MonoBehaviour
     [SerializeField] private float fireRate = 0.5f;
     [SerializeField]private float fireTimer;
     private bool firing = false;
+    
+    [SerializeField]private float damage = 1f;
     private Vector3 lookDir;
 
     
@@ -24,10 +27,11 @@ public class CannonScript : MonoBehaviour
     // Update is called once per frame
     void Update()
     {
-        if(firing){
+        if(firing && !EventSystem.current.IsPointerOverGameObject()){
             fireTimer += Time.deltaTime;
             if(fireTimer >= fireRate){
                 GameObject proj = Instantiate(projectile, transform.position, cannon.transform.rotation);
+                proj.GetComponent<Projectile>().SetDamage(damage);
                 proj.GetComponent<Rigidbody>().AddForce(cannonForce * lookDir, ForceMode.Impulse);
                 fireTimer = 0;
 
@@ -75,4 +79,20 @@ public class CannonScript : MonoBehaviour
         }
     }
 
+    public void SetFireRate(float nFireRate){
+        this.fireRate = nFireRate;
+    }
+
+    public float GetFireRate(){
+        return fireRate;
+    }
+
+    public void SetDamage(float dmg){
+        this.damage = dmg;
+    }
+
+    public float GetDamage(){
+        return damage;
+    }
+
 }
diff --git a/Assets/Scripts/PlayerController.cs b/Assets/Scripts/PlayerController.cs
index 9465141..037340b 100644
--- a/Assets/Scripts/PlayerController.cs
+++ b/Assets/Scripts/PlayerController.cs
@@ -7,10 +7,11 @@ public class PlayerController : MonoBehaviour
     
     [SerializeField] private float points;
     [SerializeField] private CannonScript cannon;
+    //private FireRateUpgrade fireRateUpgrade;
     // Start is called before the first frame update
     void Start()
     {
-        points = 0;
+        //fireRateUpgrade = new FireRateUpgrade("Fire rate 1", 10, 0.4f);
     }
 
     // Update is called once per frame
@@ -19,22 +20,37 @@ public class PlayerController : MonoBehaviour
         
     }
 
+    public bool OnUpgrade(Upgrade selectedUpgrade){
+        if(points >= selectedUpgrade.GetCost()){
+            points = points - selectedUpgrade.GetCost();
+            return true;
+        }
+        return false;
+    }
+
+    public void UpgradeFireRate(FireRateUpgrade upgrade){
+        cannon.SetFireRate(upgrade.GetFireRate());
+    }
+
+    public void UpgradeDamage(DamageUpgrade upgrade){
+        cannon.SetDamage(upgrade.GetDamage());
+    }
     
-    public float getPoints(){
+    public float GetPoints(){
         return points;
     }
 
-    public void setPoints(float nPoints){
+    public void SetPoints(float nPoints){
         points = nPoints;
     }
 
-    public void spendPoints(float amount){
+    public void SpendPoints(float amount){
         if(amount <= points){
             points = points - amount;
         } 
     }
 
-    public void gainPoints(float amount){
+    public void GainPoints(float amount){
         points += amount;
     }
 }
diff --git a/Assets/Scripts/Projectile.cs b/Assets/Scripts/Projectile.cs
index e9baf38..1770506 100644
--- a/Assets/Scripts/Projectile.cs
+++ b/Assets/Scripts/Projectile.cs
@@ -5,6 +5,7 @@ using UnityEngine;
 public class Projectile : MonoBehaviour
 {
     [SerializeField]private float lifeTime = 1f;
+    private float damage;
     private float timer;
     // Start is called before the first frame update
     void Start()
@@ -20,4 +21,12 @@ public class Projectile : MonoBehaviour
             Destroy(gameObject);
         }
     }
+
+    public void SetDamage(float dmg){
+        this.damage = dmg;
+    }
+
+    public float GetDamage(){
+        return damage;
+    }
 }
diff --git a/Assets/Scripts/UIController.cs b/Assets/Scripts/UIController.cs
new file mode 100644
index 0000000..7bd5071
--- /dev/null
+++ b/Assets/Scripts/UIController.cs
@@ -0,0 +1,21 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using TMPro;
+
+public class UIController : MonoBehaviour
+{
+    [SerializeField]private PlayerController player;
+    [SerializeField]private TMP_Text pointsTxt;
+    // Start is called before the first frame update
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        pointsTxt.text = player.GetPoints().ToString();
+    }
+}
diff --git a/Assets/Scripts/UIController.cs.meta b/Assets/Scripts/UIController.cs.meta
new file mode 100644
index 0000000..f94c72c
--- /dev/null
+++ b/Assets/Scripts/UIController.cs.meta
@@ -0,0 +1,11 @@
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diff --git a/Assets/Scripts/Upgrades.meta b/Assets/Scripts/Upgrades.meta
new file mode 100644
index 0000000..7df3314
--- /dev/null
+++ b/Assets/Scripts/Upgrades.meta
@@ -0,0 +1,8 @@
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diff --git a/Assets/Scripts/Upgrades/DamageUpgrade.cs b/Assets/Scripts/Upgrades/DamageUpgrade.cs
new file mode 100644
index 0000000..b06224b
--- /dev/null
+++ b/Assets/Scripts/Upgrades/DamageUpgrade.cs
@@ -0,0 +1,27 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class DamageUpgrade : Upgrade
+{
+    [SerializeField]private float[] damages;
+    public DamageUpgrade(string name, float[] cost, float[] damages){
+        this.cost = cost;
+        this.upgradeName = name;
+        this.damages = damages;
+    }
+
+    public void SetDamages(float[] nDamages){
+        this.damages = nDamages;
+    }
+
+    public float GetDamage(){
+        return damages[lvlUnlocked-1];
+    }
+
+    public override void Activate(){
+        if(base.UpgradeAttempt()){
+            player.UpgradeDamage(this);
+        }
+    }
+}
diff --git a/Assets/Scripts/Upgrades/DamageUpgrade.cs.meta b/Assets/Scripts/Upgrades/DamageUpgrade.cs.meta
new file mode 100644
index 0000000..ebaf191
--- /dev/null
+++ b/Assets/Scripts/Upgrades/DamageUpgrade.cs.meta
@@ -0,0 +1,11 @@
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diff --git a/Assets/Scripts/Upgrades/FireRateUpgrade.cs b/Assets/Scripts/Upgrades/FireRateUpgrade.cs
new file mode 100644
index 0000000..eb24e05
--- /dev/null
+++ b/Assets/Scripts/Upgrades/FireRateUpgrade.cs
@@ -0,0 +1,27 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class FireRateUpgrade : Upgrade
+{
+    [SerializeField]private float[] fireRates;
+    public FireRateUpgrade(string name, float[] cost, float[] fireRate){
+        this.cost = cost;
+        this.upgradeName = name;
+        this.fireRates = fireRate;
+    }
+
+    public void SetFireRates(float[] nFireRate){
+        this.fireRates = nFireRate;
+    }
+
+    public float GetFireRate(){
+        return fireRates[lvlUnlocked-1];
+    }
+
+    public override void Activate(){
+        if(base.UpgradeAttempt()){
+            player.UpgradeFireRate(this);
+        }
+    }
+}
diff --git a/Assets/Scripts/Upgrades/FireRateUpgrade.cs.meta b/Assets/Scripts/Upgrades/FireRateUpgrade.cs.meta
new file mode 100644
index 0000000..b2a60d5
--- /dev/null
+++ b/Assets/Scripts/Upgrades/FireRateUpgrade.cs.meta
@@ -0,0 +1,11 @@
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diff --git a/Assets/Scripts/Upgrades/Upgrade.cs b/Assets/Scripts/Upgrades/Upgrade.cs
new file mode 100644
index 0000000..1189b3d
--- /dev/null
+++ b/Assets/Scripts/Upgrades/Upgrade.cs
@@ -0,0 +1,55 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.EventSystems;
+using TMPro;
+
+public abstract class Upgrade : MonoBehaviour
+{
+    [SerializeField]protected float[] cost;
+    [SerializeField]protected TMP_Text costTxt;
+    [SerializeField]protected string upgradeName;
+    protected int lvlUnlocked;
+    [SerializeField]protected Sprite unlockedSprite;
+    [SerializeField]protected GameObject hoverObj;
+    [SerializeField]protected Image[] imgs;
+    [SerializeField]protected PlayerController player;
+
+    private void Start() {
+        lvlUnlocked = 0;
+        costTxt.text = cost[lvlUnlocked].ToString();
+    }
+    private void Update() {
+        // if(EventSystem.current.IsPointerOverGameObject()){
+        //     hoverObj.SetActive(true);
+        // }else{
+        //     hoverObj.SetActive(false);
+        // }
+    }
+    public float GetCost(){
+        return cost[lvlUnlocked];
+    }
+
+    public string GetName(){
+        return name;
+    }
+
+    public virtual void Activate(){
+        UpgradeAttempt();
+    }
+
+    protected bool UpgradeAttempt(){
+        if(lvlUnlocked < imgs.Length && player.OnUpgrade(this)){
+            imgs[lvlUnlocked].sprite = unlockedSprite;
+            lvlUnlocked++;
+            if(lvlUnlocked < imgs.Length){
+                costTxt.text = cost[lvlUnlocked].ToString();
+            }else{
+                costTxt.text = "--";
+            }
+            return true;
+        }
+        return false;
+    }
+}
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new file mode 100644
index 0000000..0fdd1f9
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