More and more, when people ask me about my favorite PbtA games, I include Escape from Dino Island in my list. It's just such a slick engine for one-shot or two-shot games, with a compelling hook (Dinosaurs! Mystery! Survival!) and great mechanics to back it up ("Tell a Story" always makes for great moments at the table). This is a really great game to bring to indie game meetups, local conventions, or wedding rehearsal dinners... any setting where a spontaneous RPG might be called for!