Since the game is a voxel, the map is endless in size.
Eh, not really. Voxel stands for Volumetric Pixel, which has nothing to do with the size of a map. When it boils down to it, the map is (
THEORETICALLY) endless in size because it is most likely
procedurally generated. This means that the map is being made as you expand it. Going by TK's summary, since the map is loaded in "Sectors" I assume that it's the same as "chunks" in minecraft, where as opposed to the entire map being loaded in (like Source's levels) little bits are loaded in as you get to them, and the far away parts are destroyed in memory to make room for more. Now, because it's doing this we can only assume that it's loading in from a map-file, which gives the chance that it will have the same unfortunate downfall as Rollercoaster Tycoon 3. If the map gets above a certain size (in RC3's case: 12mb) the fileIO will not be able to handle it, and the game will crash. Keep in mind that RC3 had a core written in Assembler with another level of C running some of the GUI stuff, and the time 12mb was a lot of space. I wonder how large of a file size and how far out you will have to go before the map starts getting funky, or even crashes?
But getting back on topic - voxel != procedural generation, although there could be a misunderstanding as to why. The data of each "voxel" is stored not as a flat out location of the data, but based on it's nearest neighbour.
I really don't like that more and more developers are going the way of "release in alpha, then finish the game". It just doesn't sit right. You're paying (or in some cases like this, not paying but playing) an unfinished product that is completely subject to change. I don't know, call me old fashioned, but I believe that the consumer is still the end-user, not the bug-tester. We're here to play and enjoy your finished product, not sort out the bugs for you. That's what bug testers are for - the whole process of searching for bugs and breaking a game.
The game looks interesting, but it's probably not something I will be picking up.