Shaped CDs or LPs are an invention made for collectors and labels aswell. To generate more money from one single release of a band it’s common practice to release different editions. The regular release, a special digital release, country specific releases and special collector’s editions. They often have extra tracks, a booklet with way more pages, content and pictures and sometimes come as shaped CDs.
Depicted above is Dimmu Borgir’s Alive in Torment shaped CD. The other examples are Dismember’s Death Metal, Statovarius’ I Walk To My Own Song and Machetazo’s split with Marrow on silver vinyl with red splatter in a sawblade shape.