basically the whole game

Assets/Scripts/Projectiles/DisappearingEffect.cs

@@ -0,0 +1,21 @@
+using System;
+using UnityEngine;
+
+public class DisappearingEffect : MonoBehaviour
+{
+    [SerializeField] private SpriteRenderer sprite;
+    private float currentState;
+    [SerializeField] private float decaySpeed;
+    private Color originalColor;
+
+    private void Start()
+    {
+        originalColor = sprite.color;
+    }
+
+    private void Update()
+    {
+        currentState += Time.deltaTime * decaySpeed;
+        sprite.color = Color.Lerp(originalColor, Color.clear, currentState);
+    }
+}