Multi-Genre Role-Playing Combat System
From the introduction:
The creatures and characters detailed in this supplement are not intended to establish a defined campaign setting for the Game Master, either by establishing creatures which “must” be included, or - by omission - excluding creatures which have not been detailed. The Game Master is encouraged to pick and choose creatures as he prefers, exclude any which are not to his liking, and fabricate additional creatures as he sees fit. Similarly, the Attributes, abilities, and descriptions of the creatures included herein are merely suggestions, which should be modified [by] the Game Master as needed to match the specifics of his campaign.