Arguably the “smartest” library available in Ruby for designing and creating your own card games. With features such as

• An immutable Deck
• Seeding randomness for consistent TDD game flow testing
• Card Ranking and Evaluation
• Easy hand "set" determination with simple rule selection (functional programming style)
• Some Poker hand rules provided in Standard::Rules
• A Blackjack hand evaluator under Standard::Evaluators
• Default ASCII cards of multiple kinds
• Advanced card evaluation available via card by card comparison using functional programming methodology.

This library is still quite young but has had a lot of thought put into it! Try it out and please feel free to help it grow into all it can be! :-) https://github.com/danielpclark/CardsLib