Lots of types and colors of blocks to build with. Chiseling blocks lets you make slopes, diamonds, and almost completely round shapes which is awesome in a Voxel game. Multiple worlds in this MMO are all connected with portals some temporary and some permanent. Great community and they tend to build interconnected portal networks that let you get anywhere in the universe. A player ran economy lets you trade almost everything for in game coin. The monetization model is fair, and you can't use real life money to bypass any level of progression (sad you have to comment on things like that these days). I've had Hundreds of hours in game, and I have enjoyed every minute.