What type of play that has a happy ending?

A play that has a happy ending is typically referred to as a "comedy." In comedies, the narrative often involves misunderstandings, romantic entanglements, or humorous situations that ultimately resolve in a positive manner, leading to reconciliation, marriage, or other joyful outcomes. These plays aim to entertain and uplift the audience, leaving them with a sense of satisfaction and joy. Examples include Shakespeare's "A Midsummer Night's Dream" and modern romantic comedies.