Malice is a Quake total conversion published and distributed by Quantum Axcess. Ratloop's founders developed Malice under the name "Epochalypse" the summer before the company was incorporated.
The total conversion received excellent reviews throughout the industry and won numerous awards:  


 The Malice manual front and back (click for larger images).

Malice was also distributed together with Quake
by GT Interactive in their "Resurrection Pack for Quake".