Some say this album the birth of thrash Metals represents. Clear SLAYER have time go one better placed to hardness and speed over Metallica`s "Kill 'em all". But relatively quick succession followed by still EXODUS "Bonded by Blood" and the whole wave of Bay era thrash wave, which also includes "Endless Pain" from KREATOR and "Sentence of Death" by DESTRUCTION. Thus, then, the NWOBHM of the international thrash wave was obtained quickly and the whole biker had somehow clearance on their robes do with it because even a SLAYER Patch hinpasste. Today, 25 years later, you have in the studio, of course, very different technical possibilities and of course SLAYER sound today also different. Nevertheless, "Show No Mercy" is not only a milestone in hard rock history, but until now a brilliant debut has now even stand his claim as inviolable: that debut / album has comparable entitled to be a foundation for a whole music genre with unmanageable many subcategories? First copy !! SLAYER rules !!