C# Tutorial – Create a Rock Paper Scissors Game in 100 lines of code

Hi, in this tutorial we will be remaking the rock paper scissors game in .NET and C# programming in Visual Studio. This game will be completed within 100 lines of code. We will explore how to make a simple rock paper scissors game with texts, buttons and images. In this game you will make the game so the player can play it against a simple CPU which will choose a random selection from rock paper or scissors option in the game.

  1. Make a rock paper scissors game in 100 lines of code with .Net and C# programming
  2. Use buttons and events to control the game
  3. Create a simple CPU choice system
  4. Use if statement and switch statements in the code
  5. Import images and use them to show the choices for the player and the CPU


Video Tutorial –

Download the images for Rock Paper Scissors Tutorial Project in C#

Full Source Code –

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Rock_paper_scissors_.net_game_MOO_ICT
    public partial class Form1 : Form

        string playerChoice;
        string computerChoice;
        string[] Options = { "R", "P", "S", "P", "S", "R" };
        Random random = new Random();
        int computerScore;
        int playerScore;
        string draw;

        public Form1()

        private void MakeChoiceEvent(object sender, EventArgs e)
            Button tempButton = sender as Button;
            playerChoice = (string)tempButton.Tag;

            int i = random.Next(0, Options.Length);
            computerChoice = Options[i];

            lblPlayerchoice.Text = "Player is: " + UpdateTextandImage(playerChoice, PLAYER_PIC);
            lblCPUchoice.Text = "Computer is: " + UpdateTextandImage(computerChoice, CPU_PIC);

        private string UpdateTextandImage(string text, PictureBox pic)
            string word = null;

            switch (text)
                case "R":
                    word = "Rock";
                    pic.Image = Properties.Resources.ROCK;
                case "P":
                    word = "Paper";
                    pic.Image = Properties.Resources.PAPER;
                case "S":
                    word = "Scissors";
                    pic.Image = Properties.Resources.SCISSORS;
            return word;

        private void CheckGame()
            if (computerChoice == playerChoice)
                draw = " Draw!";
            else if (playerChoice == "R" && computerChoice == "P" || playerChoice == "S" && computerChoice == "R" || playerChoice == "P" && computerChoice == "S")
                draw = null;
                draw = null;

            lblCPUresult.Text = "Computer Score: " + computerScore + Environment.NewLine + draw;
            lblPlayerresult.Text = "Player Score: " + playerScore + Environment.NewLine + draw;



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