The Restoration spectacular, or elaborately staged "machine play", hit the London public stage in the late 17th-century Restoration period, enthralling audiences with action, music, dance, moveable scenery, baroque illusionistic painting, gorgeous costumes, and special effects such as trapdoor tricks, "flying" actors, and fireworks. These shows have always had a bad reputation as a vulgar and commercial threat to the witty, "legitimate" Restoration drama; however, they drew Londoners in unprecedented numbers and left them dazzled and delighted. Basically home-grown and with roots in the early 17th-century court masque, though never ashamed of borrowing ideas and stage technology from French opera, the spectaculars are sometimes called "English opera". The expense of mounting ever more elaborate scenic productions drove the two competing theatre companies into a dangerous spiral of huge expenditure and correspondingly huge losses or profits.