 By the end of the decade, a symphonic metal variant of gothic metal had been developed by Tristania and Within Temptation.Nightwish also integrated elements of gothic metal into their well-known mix of symphonic metal and power metal.In the 21st century, gothic metal has moved towards the mainstream in Europe, particularly in Finland where groups such as Entwine, HIM, Lullacry and Poisonblack have released hit singles or chart-topping albums.