feat: add number guessing game implementation

number_guessing.py

@@ -0,0 +1,30 @@
+import random
+
+def guessing_game():
+    print("Welcome to the Number Guessing Game!")
+
+    upper_bound = int(input("Write the upper bound of the range: "))
+
+    print(f"I'm thinking of a number between 1 and {upper_bound}.")
+
+    number_to_guess = random.randint(1, upper_bound)
+    attempts = 0
+    guessed_correctly = False
+
+    while not guessed_correctly:
+        try:
+            guess = int(input("Make a guess: "))
+            attempts += 1
+
+            if guess < number_to_guess:
+                print("Too low.")
+            elif guess > number_to_guess:
+                print("Too high.")
+            else:
+                guessed_correctly = True
+                print(f"Congratulations! You've guessed the number {number_to_guess} in {attempts} attempts.")
+        except ValueError:
+            print("Please enter a valid integer.")
+
+if __name__ == "__main__":
+    guessing_game()