Number Guessing Game

Source: Dev.to

Overview

We built a Number Guessing Game where the system generates a random number and the player tries to guess it with hints like “higher” or “lower.” Difficulty levels change the range of numbers:

• Easy: 1–20
• Medium: 1–50
• Hard: 1–100

The game also demonstrates concepts such as pseudo‑randomness (using a seed, typically the system time), careful user‑input handling, and a simple leaderboard that stores and displays player performance.

Implementation

import random

leaderboard = []

def get_difficulty():
    print("1. Easy (1-20)")
    print("2. Medium (1-50)")
    print("3. Hard (1-100)")

    while True:
        try:
            choice = int(input("Choose difficulty: "))
            if choice == 1:
                return "easy", 20, 10
            elif choice == 2:
                return "medium", 50, 8
            elif choice == 3:
                return "hard", 100, 5
            else:
                print("Invalid choice")
        except:
            print("Enter a valid number")

def play_game():
    name = input("Enter your name: ")
    difficulty, max_range, attempts = get_difficulty()

    secret_number = random.randint(1, max_range)

    print(f"\nGuess number between 1 and {max_range}")

    for attempt in range(1, attempts + 1):
        try:
            guess = int(input(f"Attempt {attempt}: "))
        except:
            print("Invalid input")
            continue

        if guess == secret_number:
            print("Correct!")
            leaderboard.append({
                "name": name,
                "difficulty": difficulty,
                "attempts": attempt
            })
            return
        elif guess < secret_number:
            print("Higher")
        else:
            print("Lower")

    print(f"Game Over! Number was {secret_number}")

def view_leaderboard():
    if not leaderboard:
        print("No data yet")
        return

    difficulty_order = {"easy": 1, "medium": 2, "hard": 3}

    sorted_data = sorted(
        leaderboard,
        key=lambda x: (difficulty_order[x["difficulty"]], x["attempts"])
    )

    print("\nLeaderboard:")
    for p in sorted_data:
        print(p["name"], p["difficulty"], p["attempts"])

def main():
    while True:
        print("\n1. Play Game")
        print("2. View Leaderboard")
        print("3. Exit")

        choice = input("Enter choice: ")

        if choice == "1":
            play_game()
        elif choice == "2":
            view_leaderboard()
        elif choice == "3":
            break
        else:
            print("Invalid choice")

main()

Security

Communication between systems occurs over HTTPS using encryption, ensuring that data cannot be intercepted by attackers.

Takeaways

This session showed how a simple game can help us understand important concepts such as concurrency, locking, database design, randomness, and security. Even small programs can lay a strong foundation for understanding real‑world systems.