Assignment #3: Console Game

You and a partner will design a simple console game app. For example:

  1. Guess letters to figure out a word or sentence

  2. Guess a 3 or 4-color sequence

  3. Play a game of 21

  4. Global Thermonuclear War

  5. etc.


Click Run to play Rock, Paper, Scissors against the computer!


To be considered complete, your program must include each of the following:

  1. User input (to make the program interactive).

  2. At least one loop and one conditional.

  3. Two or more functions, one of which must be a main() function.

  4. At least one list.

  5. A replay option (e.g. “Would you like to play again?”).

To boost your score for this assignment, you and your partner can include one or more of the following Bonus Items:

  1. Use at least one dictionary in addition to (or in place of) the required list(s).

  2. Use classes/objects.

  3. Use a module (custom or ready-made).

Part 1: Choose an Idea

Before you start coding, you and your partner must decide what game you want to create!

  1. Brainstorm ideas and write them down.

  2. Show the list of your ideas to your teacher. Receive feedback on which ones are suitable for this assignment.

  3. Narrow down your list, then select the idea that excites you the most.

Next, describe to each other what you want the program to do. Now is NOT the time to write code! Discuss the GAME, not Python.

  1. Write down the features you want your game to have.

  2. Start simple! From your features list, select only the most important ideas for your game. You have a limited amount of time, and you can always add more features later.

  3. Write down how the game will be played by the user. What inputs will be needed?

  4. Identify what information needs to be displayed in the console (intro, user input prompts, results, etc.).

Part 2: Outline the Program

Now that you and your partner have chosen a game idea, the next step is to block out the different parts of the program. This can be done with pencil and paper, in a shared document, or with comments in a code editor.

The idea here is to describe how each part of the program works without worrying about the actual Python code yet. This can include an outline of the data and variables needed and/or a short description of the logic for each part of the game (e.g. loops, conditionals, functions, etc.).


For the Rock, Paper, Scissors game above, the outline might look something like:

A four part outline describing the different pieces of a rock-paper-scissors program.

Part 3: Code the Console Game

Login to your Trinket or account. Start a new project and give it a descriptive name (something flashier than Assignment 3). Be sure to share the link to the project with your partner!

Begin coding your game by following the outline you made in Part 2. Here are a few tips to help you complete your project with less hassle:

  1. Start by coding something small that works (NOT the whole game). For example, when the player clicks Run, what should they see on the screen first?

  2. Test your new program carefully before moving on.

  3. Next, add one small, new thing to the program. IMPORTANT: Keep your code working! If the new feature breaks the program, find and fix the bugs before moving on.

  4. Add another feature to the program. Keep the code working.

  5. Repeat this process until you have added all your planned features.

Part 4: Challenge Your Game

Your game is almost complete! You just need to run it a few times to check for any leftover bugs.

Users often enter the wrong thing when prompted. For example, if they are asked for a number between 1 and 10, they might enter 100 or the string 'one'. Your program needs to survive these cases.

Also, you need to check to make sure your program deals with edge cases correctly. For example, in the range 1 - 10, the values 1 and 10 are at the edge of the accepted entries. A conditional that checks for user_choice < 1 behaves differently than one that uses user_choice <= 1. This small change in logic can cause unexpected results, like never being able to select Rock in the Rock, Paper, Scissors game.

Run your program several times and do the following:

  1. For every input statement, enter an invalid response. Try using values outside of the expected range. Also try entering the wrong data type (e.g. float or str when an int is required).

  2. For every numerical input, enter the smallest valid option.

  3. For every numerical input, enter the largest valid option.

If your program crashes or produces unexpected results during these tests, then you need to find and fix the bugs.

Once you finish this final round of debugging, your game is ready!


One of the best ways to find bugs in your game is to let someone else play it!


Before you submit your final program, be sure that your code:

  1. Works.

  2. Includes your name and your partner’s name.

  3. Includes each of the required items.

  4. Survives invalid input. For example, if your program asks the user to enter a number, it should not crash when they enter a letter.

  5. Includes enough comments to describe what each part of the code is doing.

  6. Follows proper Python naming conventions.

Your teacher will provide you with a detailed rubric for this assignment. This describes how each part of the project will be graded, as well as how many points each part can earn.

Submitting Your Work

Your teacher will provide instructions for sharing the URL for your project.