PlanetUnreal has word up of another new mutator for the UT demo on The Mutation Device called The Weapon Arena, that adds Rocket Arena functionality to the demo by replacing all the weapons with weapons of a single type (and all ammo with the ammo which corresponds to the weapon type), allowing the server operator to choose the weapon which will be used in the Arena match, which can include any of the Unreal Tournament weapons, or third-party weapons. There's also word there that an update to the Unreal Map Designer's Diary has been updated with a new lighting tutorial covering the basics of static lighting, with a lesson on how to create "the corona effect." The update also includes some comments on Unreal Tournament editing.