Horse outward similarity is an unreliable measure of relatedness. Besides the horse, there are six other species of genus "Equus" in the Equidae family. These are the ass or donkey, "Equus asinus"; the mountain zebra, "Equus zebra"; plains zebra, "Equus quagga"; Grévy's zebra, "Equus grevyi"; the kiang, "Equus kiang"; and the onager, "Equus hemionus". Horses can crossbreed with other members of their genus. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a jenny (female donkey). Other hybrids include the zorse,
Creature of Havoc languages and elven magic. The player begins the adventure as the "creature of havoc" of the title, an unidentified, violent beast with no concept of who or where they are. The creature gradually recovers the ability to reason and communicate, and must learn what has happened and why. Because the creature cannot make its own decisions, it is governed by instinct. Once it finds the Vapour of Reason, it is able to make choices. The creature proceeds through the dungeon, killing a number of adventurers before finding the Vapour of Languages, which allows the creature to understand what others are