Centuries ago, an infamous hunter used a unique and terrible trap to capture the very souls of mice and confine them in gemstones. When the rest of the world found out, the hunter was banished and his name and the details of his trap were erased from history.
In the intervening years, the mice have started breaking free from the gemstones and using the very sand around them to craft a monstrous form. Be careful hunting these mice down! They've already been caught once before and are twice as prepared!
Mousehunt Wiki page