Text-Based Slot Machine

Problem Statement:-

To design and implement a text-based slot machine game in Python that allows users to deposit money, place bets, spin a randomized slot board, and receive payouts based on matching symbols across selected betting lines.The project focuses on user input handling, balance management, randomization, modular logic structure, and reward calculation.

Objectives:-

• Simulate a simplified casino slot machine using Python.
• Allow interactive user participation (deposit, betting, spinning).
• Generate random slot results based on symbol rarity.
• Calculate winnings based on symbol payout values.
• Maintain the player’s account balance throughout the game.

Project Summary:-

This program lets the user:

• Deposit money.
• Select how many lines they want to bet on.
• Choose a bet amount per line.
• Spin the machine.
• View the result grid.
• Check winnings.
• Continue or quit.
• The system then updates the balance accordingly.

System Flow in Top-Down View:-

• Step 1: Start Program.
• Step 2: User Deposits Balance.
• Step 3: User Selects Betting Lines.
• Step 4: User Sets Bet Amount.
• Step 5: Random Slot Generation.
• Step 6: Evaluate Winning Lines.
• Step 7: Add or Subtract Balance.
• Step 8: User Chooses to Continue or Exit.

Project Structure:-

• main.py: Contains the complete slot machine program.
• README.md: Contains documentation and instructions.
• images/output1.png: Output screenshot.

Requirements:-

• Python 3.x .
• No external libraries needed.

How to Run the Program:-

• Open terminal and enter: python slot_machine.py
• Or, python3 slot_machine.py

Game Rules:-

• Minimum bet: $1.
• Maximum bet: $100.
• You may bet on 1 – 3 lines.
• Total betting cost = bet per line × number of lines.
• If all symbols match across a bet line → you win based on value.

Symbol Mechanics:-

Symbol Frequency(Rarity)

Symbol	Count
A	2
B	4
C	6
D	8
Smaller count signifies higher rarity.

Payout Multipliers

Symbol	Pays
A	5× bet
B	4× bet
C	3× bet
D	2× bet

Sample Output Screenshot:-

Sample Output Screenshot

Implementation in Top Down Approach :-

High-Level Components are as follows:

• Main Game Loop.
• Deposit handler.
• Betting and validation.
• Random slot reel generator.
• Display function.
• Winnings evaluator.
• Balance updater.

Design Method Used is as follows:

• Modular design.
• Function-based organization.
• Input validation.
• Probability-based random draws.

Concepts Used:-

• Functions.
• Dictionaries.
• Loops.
• Random module.
• String formatting.
• Conditional logic.
• Array indexing.
• Data validation.

Optional Future Enhancements:-

• GUI version.
• Leaderboard system.
• API-based payout tracking.
• Color-based terminal UI.

Project By:

• Sanchayan Banerjee
• GitHub:sanchayan-banerjee