One level of the upcoming scenario release from the DMMC. If the rest of the scenario lives up to the standard set here, this'll be a beautiful piece of work. This is really, really nicely balanced. Flow is great, alien placement is great, there are no horribly misaligned textures... This level, by itself, is a lot of fun to play. As level 7 of an 13-level scenario, it's tantalizing...

Three enclosed rings. All the good stuff is on the top one, but you start at the bottom...