One-Act plays have become more popular after they showed that they can produce the same effect of quasi instant gratification in the same level that a short story does.
One of the factors for its effectiveness is that it gives playwrights a chance produce a substantial piece of work in a shorter amount of time. It also regulates the number of characters, making it much simpler to split the action, climax, and falling action among fewer characters hence giving them more power individually.
Because the one-act play is unapologetic in its shorter length of action, it can be more daring and adventurous in finding ways to get to the conclusion of the storyline. It can be surprising and more engaging than a three-act play.
Nevertheless as the play "Trifles" can show, the action is unequivocally an attention-getter and the topic so rich that it leaves you in consistent suspense until the end.