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This is an object-oriented programming implementation of 21 (Blackjack) written in Ruby. It runs in the command line, but the emphasis is on OOP design: a Game object orchestrates the round, Player and Dealer inherit shared behavior from a Participant base class, and individual Card objects calculate their own values (including dynamic Ace handling).

A Deck object generates and shuffles the full 52-card deck, and a few small modules (Utility, GameMessages, WinningScore, etc.) keep reusable behavior (screen clearing, UI animations, shared constants) organized and easy to mix in.

Skills demonstrated:

•     Ruby
•     Object-oriented programming (classes, inheritance, encapsulation)
•     Collaboration between objects (Game ↔ Player/Dealer ↔ Deck/Card)
•     Modules and mixins (shared behavior and shared constants)
•     Program design (separation of responsibilities, reusable components)
•     Game logic (hit/stay flow, dealer rules, bust/tie logic, winner determination)
•     State management (hands, deck mutation, round resets)
•     User experience polish (animated messages, dynamic prompts, screen clearing)