A very nice entry, the game has a surprising amount of depth to it and has a real sense of accomplishment when you manage to get your small planet from a pile of dirt to a nice living place. At first I didn't quite understand the blackholes and how to defeat them, but after a while I got the hang of things, much thanks to the good hover over information that you provide. Everything looks and feels nice and is graphically coherent and well made.
Interesting world builder. I felt like the black holes and antimatter were a bit relentless, especially at the beginning where you couldn't really afford to deal with them. It would have been nice to also be able to repair the empty space that the black holes create.
Overall a great game!