The Lost Planet of Ko'sstahn, by elveloy 

The Lost Planet of Ko'sstahn, where beasts with three heads and five tails roam the city streets at night, is in peril. Summoned by the Princess Kelliana, James Carver must battle dangerous and powerful foes if the day is to be saved ... A collection of some of my entries for Sci-Fi Smackdown 8 including The Lost Planet of Ko'sstahn, my winning entry for the smackdown, and Alien Invasion.

A New Dawnling Rises, by KingBritain

This one features as part of #TeamEcrivain for the Epic Tales From Beautiful Minds contesthology...

...and you should read not only that, but every damn story in there!