diff --git a/rock-paper-scissors.py b/rock-paper-scissors.py
new file mode 100644
index 0000000..1f84e96
--- /dev/null
+++ b/rock-paper-scissors.py
@@ -0,0 +1,54 @@
+import random
+
+def play_round():
+    choices = ["rock", "paper", "scissors"]
+    computer_choice = random.choice(choices)
+
+    while True:
+        user_choice = input("Enter rock, paper, or scissors: ").lower()
+        if user_choice in choices:
+            break
+        else:
+            print("Invalid choice. Please enter rock, paper, or scissors.")
+
+    print(f"You chose: {user_choice}")
+    print(f"Computer chose: {computer_choice}")
+
+    if user_choice == computer_choice:
+        print("It's a tie!")
+        return 0
+    elif (
+        (user_choice == "rock" and computer_choice == "scissors")
+        or (user_choice == "paper" and computer_choice == "rock")
+        or (user_choice == "scissors" and computer_choice == "paper")
+    ):
+        print("You win!")
+        return 1
+    else:
+        print("You lose!")
+        return -1
+
+def main():
+    user_score = 0
+    computer_score = 0
+
+    print("Welcome to Rock, Paper, Scissors!")
+
+    while True:
+        result = play_round()
+        if result == 1:
+            user_score += 1
+        elif result == -1:
+            computer_score += 1
+
+        print(f"Your score: {user_score}, Computer score: {computer_score}")
+
+        play_again = input("Play again? (yes/no): ").lower()
+        if play_again != "yes":
+            break
+
+    print("Thanks for playing!")
+    print(f"Final score. Your score: {user_score}, Computer score: {computer_score}")
+
+if __name__ == "__main__":
+    main()
diff --git a/simple-calculator.py b/simple-calculator.py
new file mode 100644
index 0000000..8153f67
--- /dev/null
+++ b/simple-calculator.py
@@ -0,0 +1,21 @@
+num1 = float(input("Enter first number: "))
+num2 = float(input("Enter second number: "))
+operator = input("Enter operator (+, -, *, /): ")
+
+if operator == '+':
+    result = num1 + num2
+elif operator == '-':
+    result = num1 - num2
+elif operator == '*':
+    result = num1 * num2
+elif operator == '/':
+    if num2 == 0:
+        print("Error: Division by zero")
+    else:
+        result = num1 / num2
+else:
+    print("Invalid operator")
+    result = None
+
+if result is not None:
+    print("Result:", result)