Irish playwrights have had a significant impact on the world of literature. George Bernard Shaw, also known as GBSHAW, was an Irish playwright and critic who wrote over 60 plays. His works often focused on social issues and were known for their wit and satire. John Millington Synge was another influential Irish playwright who wrote plays such as 'Riders to the Sea' and 'The Playboy of the Western World'. William Butler Yeats was an Irish poet, dramatist, and one of the foremost figures of 20th century literature. He wrote plays such as 'The Countess Cathleen' and 'The Land of Heart's Desire'. Lastly, Sean O'Casey was an Irish dramatist and memoirist whose works often focused on the struggles of the working class in Dublin. His most famous plays include 'Juno and the Paycock' and 'The Plough and the Stars'.